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Background Degenerative lumbar spinal stenosis (DLSS) is a common degenerative condition in older adults. Muscle atrophy (MA) is a leading cause of muscle weakness and disability commonly reported in individuals with spinal stenosis. The purpose of this study was to investigate if the MA correlates with the grade of spinal stenosis in patients with DLSS. Methods A retrospective analysis on 48 male and 184 female DLSS patients aged around 54.04 years (54.04 ± 8.93) were involved and divided into 6 groups according to claudication-distance-based grading of spinal stenosis, which confirmed by two independent orthopedic surgeons using T2- weighted images. Using 1.5T MRI scanner, the severity of MA is assessed based on its negative correlation with the ratio of total fat-free multifidus muscle cross-sectional area (TFCSA) to total multifidus muscle cross-sectional area (TCSA). Adobe Photoshop CS6 was used for qualitative image analysis and calculate the TFCSA/TCSA ratio to assess the severity of MA, compare the grade of MA with the spinal stenosis segment, stenosis grade and symptom side. Results In DLSS group, The TFCSA/TCSA ratio are 74.33 ± 2.18 in L3/4 stenosis, 75.51 ± 2.79 in L4/5 stenosis, and 75.49 ± 2.69 in L5/S1 stenosis. there were significant decreases in the TFCSA/TCSA ratio of stenotic segments compared with non-stenotic segments of the spinal canal (P < 0.05) while no significant difference between the non-stenotic segments (P > 0.05). TFCSA/TCSA ratios is significant differences in the TFCSA/TCSA ratios of the 6 DLSS groups (F = 67.832; P < 0.05). From Group 1 to Group 6, the TFCSA/TCSA ratio of stenotic segments positively correlated with the absolute claudication distance (ACD). (P r = 0.852). Besides, the TFCSA/TCSA ratios are smaller in the symptomatic sides of the spine than the contralateral sides (t = 4.128, P = 0.001). Conclusions The stenotic segments of the spinal canal are more atrophied than the non-stenotic segment in DLSS patients. It is shows that a strong positive correlation between the severity of multifidus atrophy and the severity of spinal stenosis.

The selection of a correct level in lumbar spinal stenosis (LSS) remains a common problem and is critically important to the effectiveness of this surgical treatment. Surgery is invasive, and extended laminectomy may lead to secondary surgical complications. The application of diffuse tensor imagining (DTI) and paraspinal mapping (PM) in addition to conventional magnetic resonance imaging (cMRI) may be helpful in this respect. However, the superiority of cMRI + DTI over cMRI+ (DTI or PM) in reducing decompression has not yet been established.We compared the surgical levels, determined by cMRI + DTI and cMRI+ (DTI or PM) (self-control). Treatment outcome measurements were performed at two weeks, three months, six months, and twelve months postoperatively.The surgical levels determined by cMRI ± DTI showed less than that determined by cMRI± (DTI or PM) with statistically significant differencesThe effectiveness of cMRI ± DTI in the reduction of the surgical levels in degenerative lumbar spinal stenosis is superior than that of cMRI± (DTI or PM).

Objective To compare the clinical efficacy of percutaneous full‐endoscopic transforaminal lumbar interbody fusion (Endo‐TLIF) with percutaneous pedicle screws (PPSs) performed by using a visualization system with that of minimally invasive transforaminal lumbar interbody fusion (MIS‐TLIF) for the treatment of degenerative lumbar spinal stenosis (LSS). Methods From June 2017 to May 2018, the data of a total of 78 patients who met the selection criteria were retrospectively reviewed and were divided into the Endo‐TLIF group (40 cases) and the MIS‐TLIF group (38 cases) according to the surgical method used. The visual analog scale (VAS) and the Japanese Orthopaedic Association (JOA) scale were administered preoperatively and at the 1‐week, 3‐month, and 1–2‐year follow‐ups. The fusion rate and major complications, including revision, were also recorded. Results All the patients were followed up for 24 to 34 months, with an average follow‐up of 30.7 months. The intraoperative blood loss and length of hospital stay for the Endo‐TLIF group (60.56 ± 0.36 mL, 8.12 ± 0.92 days, respectively) were statistically significantly lower than those for the MIS‐TLIF group (65.47 ± 0.91 mL, 9.66 ± 1.34 days, respectively) (P 0.05). There was no significant difference in the intervertebral altitude between the two groups at the 3‐month (11.36 ± 0.23, 11.21 ± 0.42, respectively) or final follow‐up (10.88 ± 0.64, 10.81 ± 0.39, respectively) (P > 0.05). Dural tears, cerebrospinal fluid leakage, infection, and neurologic injury did not occur. Both groups showed good intervertebral fusion at the last follow‐up. The intervertebral fusion rate was 97.5% (39/40) in the Endo‐TLIF group and 94.7% (36/38) in the MIS‐TLIF group, with no statistically significant difference between the two groups (χ 2 = 0.118, P = 0.731). At the final follow‐up, the modified MacNab's criteria were 92.5% and 89.5% between the two groups. Conclusion Endo‐TLIF with percutaneous pedicle screws (PPS) performed by using a visualization system for lumbar degenerative disease may be regarded as an efficient alternative surgery for degenerative lumbar spinal stenosis. It is a safe and minimally invasive way to perform this surgery and has shown satisfactory clinical outcomes., Endo‐TLIF with percutaneous pedicle screws may be regarded as an efficient alternative surgery for degenerative lumbar spinal stenosis. It is a safe and minimally invasive way to perform this surgery and has shown satisfactory clinical outcomes.

The aim of this study is to determine the sagittal inclination of lumbar spinous processes (SPs) in individuals with degenerative lumbar spinal stenosis (DLSS). It is a retrospective computerized tomography (CT) study including 345 individuals divided into two groups: control (90 males, 90 females) and stenosis (80 males and 85 females. The SP inclination was measured in the midsagittal plane from L1 to L5 levels. Stenosis males (L3-L5) and females (L1, L4) manifested significantly greater SP inclination compared to their counterparts in the control group. Males had significantly horizontal SP orientation compared to females (L1, L2). We also found that SP inclination became steeper as we descend caudally. This study indicates that SP inclinations are significantly associated with DLSS.

OBJECTIVEThe use of indirect decompression surgery for severe canal stenosis remains controversial. The purpose of this study was to investigate the efficacy of lateral interbody fusion (LIF) without posterior decompression in degenerative lumbar spinal spondylosis with severe stenosis on preoperative MRI.METHODSThis is a retrospective case series from a single academic institution. The authors included 42 patients (45 surgical levels) who were preoperatively diagnosed with severe degenerative lumbar stenosis on MRI based on the previously published Schizas classification. These patients underwent LIF with supplemental pedicle screw fixation without posterior decompression. Surgical levels were limited to L3–4 and/or L4–5. All patients satisfied the minimum 1-year MRI follow-up. The authors compared the cross-sectional area (CSA) of the thecal sac and the clinical outcome scores (Japanese Orthopaedic Association [JOA] score) preoperatively, immediately postoperatively, and at the 1-year follow-up. Fusion status and disc height were evaluated based on CT scans obtained at the 1-year follow-up.RESULTSThe CSA improved over time, increasing from 54.5 ± 19.2 mm2 preoperatively to 84.7 ± 31.8 mm2 at 3 weeks postoperatively and to 132.6 ± 37.5 mm2 at the last follow-up (average 28.3 months) (p < 0.001). The JOA score significantly improved over time (preoperatively 16.1 ± 4.1, 3 months postoperatively 24.4 ± 4.0, and 1-year follow-up 25.7 ± 2.9; p < 0.001). The fusion rate at the 1-year follow-up was 88.8%, and disc heights were significantly restored (preoperative, 6.3 mm and postoperative, 9.6 mm; p < 0.001). Patients showing poor CSA expansion (< 200% expansion rate) at the last follow-up had a higher prevalence of pseudarthrosis than patients with significant CSA expansion (> 200% expansion rate) (25.0% vs 3.4%, p < 0.001). No major perioperative complications were observed.CONCLUSIONSLIF with indirect decompression for degenerative lumbar disease with severe canal stenosis provided successful clinical outcomes, including restoration of disc height and indirect expansion of the thecal sac. Severe canal stenosis diagnosed on preoperative MRI itself is not a contraindication for indirect decompression surgery.

The aim of the current study was to establish whether the vertebral morphometry (e.g., vertebral body width and spinal canal diameters) is associated with degenerative lumbar spinal stenosis (DLSS). A retrospective computerized tomography (CT) study from L1 to L5 for two sample populations was used. The first included 165 participants with symptomatic DLSS (sex ratio 80 M/85F), and the second had 180 individuals from the general population (sex ratio: 90 M/90F). Vertebral body length (VL) and width (VW) were significantly greater in the stenosis males and females compared to their counterparts in the control. The mean VL in the stenosis males was 31.3 mm at L1, 32.6 mm at L2, 34 mm at L3, 34.1 mm at L4, and 34.5 at L5 compared to 29.9 mm, 31.3 mm, 32.6 mm, 32.8 mm, and 32.9, respectively, in the control group ( P ≤ 0.003 ). Additionally, the bony anterior-posterior (AP) canal diameters and cross-sectional area (CSA) were significantly smaller in the stenosis group compared to the control. The mean AP canal values in the stenosis males were 17.8 mm at L1, 16.6 mm at L2, 15.4 mm at L3, 15.6 mm at L4, and 16.1 at L5 compared to 18.7, 17.8, 16.9, 17.6, and 18.8, respectively, in the control group. Vertebral length (OR-1.273 to 1.473; P ≤ 0.002 ), AP canal diameter (OR-0.474 to 0.664; P ≤ 0.007 ), and laminar inclination (OR-0.901 to 0.856; P ≤ 0.025 ) were significantly associated with DLSS. Our study revealed that vertebral morphometry has a role in DLSS development.

Background Degenerative lumbar spinal stenosis (DLSS) is a common condition secondary to degenerative changes. Acupuncture may be effective for treating DLSS. However, there is a lack of sufficient evidence showing the efficacy of acupuncture. The aim of this study is to assess the efficacy and safety of acupuncture for relieving neurogenic claudication in patients with DLSS. Methods A total of 196 patients will be randomly assigned to an acupuncture group or a sham acupuncture group at a ratio of 1:1. Patients will receive 18 sessions of treatment for 6 continuous weeks. The primary outcome will be the change in the Modified Roland-Morris Disability Questionnaire score from baseline to week 6. The secondary outcomes will include the change in the scores from baseline for the Numerical Rating Scale, Swiss Spinal Stenosis Questionnaire, and Anxiety and Depression Scale. Additionally, the expectancy of acupuncture, blinding, and safety will also be assessed. All analysis will be performed based on intention-to-treat. Discussion The aim of this study is to evaluate the efficacy and safety of acupuncture for the treatment of neurogenic claudication in patients with DLSS. A limitation of this study is that acupuncturists cannot be blinded according to the characteristics of acupuncture, which may introduce some bias. Trial registration ClinicalTrials.gov NCT03784729 and protocol ID 2018-161-KY. Registered on 18 December 2018.

BACKGROUND The aim of this study was to determine whether timing of lumbar spinal fusion (LSF) before revision total hip arthroplasty (THA) would impact dislocation and rerevision rates. METHODS This retrospective analysis includes a total of 505 patients who underwent revision THA with concomitant diagnosis of degenerative lumbar spinal stenosis with spondylolisthesis. Patients were stratified into the following two cohorts: (1) 328 patients who underwent revision THA with previous LSF and (2) 177 patients who underwent revision THA, followed by LSF. Postoperative complications including dislocation and rerevision rates were evaluated. RESULTS Patients who underwent revision THA with previous LSF demonstrated significantly higher dislocation rates and rerevision rates compared with patients who underwent revision THA, followed by LSF, at the 1-year follow-up (6.7% versus 5.1%, P < 0.01; 8.5% versus 7.0%, P = 0.02). Patients who underwent revision THA, followed by LSF within 1 year demonstrated significantly higher dislocation and rerevision rates (5.6% versus 4.1%; 7.6% versus 6.4%). DISCUSSION This study demonstrates that patients who underwent revision THA with previous LSF demonstrated notably higher dislocation rates and rerevision rates compared with patients who underwent revision THA, followed by LSF, with the greater the intervals between revision THA and LSF, the lower the postoperative dislocation rates and rerevision rates.

The aim of this study is to establish whether facet tropism (FT) and orientation (FO) are associated with degenerative lumbar spinal stenosis (DLSS). A retrospective computerized tomography (CT) study including 274 individuals was divided into two groups: control (82 males and 81 females) and stenosis (59 males and 52 females). All participants have undergone high-resolution CT scan of the lumbar spine in the same position. FT and FO were measured at L1-2 to L5-S1. Significant sagittal FO was noted in the stenosis males (L2-3 to L4-5) and females (L2-3 to L5-S1) compared to the controls. The prevalence of FT was remarkably greater in the stenosis males (L4-5, L5-S1) and females (L3-4, L5-S1) compared to their counterparts in the control group. Our results also showed that FT (L3-4 to L5-S1) increases approximately 2.9 times the likelihood for DLSS development. This study indicates that FO and FT in the lower lumbar spine are significantly associated with DLSS.

The aim of this study was to compare pedicle dimensions in degenerative lumbar spinal stenosis (DLSS) with those in the general population. A retrospective computerized tomography (CT) study for lumbar vertebrae (L1 to L5) from two sample populations was used. The first included 165 participants with symptomatic DLSS (age range: 40-88 years, sex ratio: 80 M/85 F), and the second had 180 individuals from the general population (age range: 40-99 years, sex ratio: 90 M/90 F). Both males and females in the stenosis group manifested significantly greater pedicle width than the control group at all lumbar levels (P<0.05). In addition, pedicle heights for stenosis females were remarkably smaller on L4 and L5 levels compared to their counterparts in the control group (P<0.001). Males have larger pedicles than females for all lumbar levels (P<0.001). Age and BMI did not demonstrate significant association with pedicle dimensions. Our outcomes indicate that individuals with DLSS have larger pedicle widths than the control group. More so, pedicle dimensions are gender-dependent but independent of age and BMI.

Study DesignRetrospective study.PurposeWe examined the clinical and radiological outcomes of patients who received revision surgery for pseudarthrosis or adjacent segment disease (ASD) following decompression and instrumented posterolateral fusion (PLF).Overview of LiteratureAt present, information regarding the outcomes of revision surgery for complications such as pseudarthrosis and ASD following instrumented PLF is limited.MethodsThis study examined 60 patients who received PLF for degenerative lumbar spinal stenosis and subsequently developed pseudarthrosis or ASD leading to revision surgery. Subjects were divided into a group of 21 patients who received revision surgery for pseudarthrosis (Group P) and a group of 39 patients who received revision surgery for ASD (Group A). Clinical outcomes were evaluated using the visual analogue scales for back pain (VAS-BP) and leg pain (VAS-LP), the Korean Oswestry disability index (K-ODI), and each patient's subjective satisfaction. Radiological outcomes were evaluated from the extent of bone union, and complications in the two groups were compared.ResultsVAS-LP at final follow-up was not statistically different between the two groups (p =0.353), although VAS-BP and K-ODI at final follow-up were significantly worse in Group P than in Group A (all p p =0.018). The rate of reoperation was significantly higher in Group P (29%) than in Group A (5%) (p =0.021) due to complications.ConclusionsClinical and radiological outcomes were worse in patients who had received revision surgery for pseudarthrosis than in those who had revision surgery for ASD. Elderly patients should be carefully advised of the risks and benefits before planning revision surgery for pseudarthrosis.

Background Degenerative lumbar spinal stenosis (DLSS) is a common health problem in the elderly and usually associated with three-joint complex degeneration. Schmorl’s nodes (SNs) are described as vertical herniation of the disc into the vertebral body through a weakened part of the end plate that can lead to disc degeneration. Since SNs can harm the spine unit stability, the association between DLSS and SNs is expected. The aim of this study is to shed light on the relationship between degenerative lumbar spinal stenosis and SNs. Methods Two groups of individuals were studied: the first included 165 individuals with DLSS (age range: 40–88, sex ratio: 80 M/85 F) and the second 180 individuals without spinal stenosis related symptoms (age range: 40–99, sex ratio: 90 M/90 F). The presence or absence of SNs on the cranial and caudal end plate surfaces at the lumbosacral region (from L1 to S1 vertebra) was recorded, using CT images (Brilliance 64 Philips Medical System, Cleveland Ohio, thickness of the sections was 1–3 mm and MAS, 80–250). Chi-Square test was taken to compare the prevalence of SNs between the study groups (control and stenosis) by lumbar disc level, for each gender separately. Multivariable logistic regression analysis was also used to determine the association between DLSS and SNs. Results The prevalence rate of SNs was significantly greater in the stenosis males (L1-2 to L5-S1) and females (L4-5 and L4-S1) compared to their counterparts in the control (P

Background Acupuncture is commonly used to treat degenerative lumbar spinal stenosis in Asian countries. However, rigorous data regarding the efficacy and safety of acupuncture for aging patients are currently lacking. Methods Eighty patients older than 50 years were assigned randomly to the acupuncture group or the noninsertive sham acupuncture for 24 treatments over an 8-week period. Measurements were obtained at baseline and 4 and 8 weeks of treatment; and 3 and 6 months after completion of treatment. The primary outcome was a change in the 24-point Roland Morris Disability Questionnaire scores at the end of treatment. The secondary outcomes included disability, pain intensity, symptoms, and dysfunction. Results At the end of treatment, mean changes in the Roland Morris Disability Questionnaire were −4.1 (95% CI, −4.9 to −3.3) in the acupuncture group and −1.5 (95% CI, −2.3 to −0.7) in the sham group, with a statistically significant between-group difference: −2.6 (95% CI, −3.7 to −1.4). Acupuncture was superior to sham acupuncture in reducing pain intensity (between-group difference: −2.9 [95% CI, −3.8 to −2.0] in leg and buttock pain, vs −2.3 [95% CI, −3.0 to −1.5] in back pain), symptoms and dysfunction (between-group difference: −0.9 [95% CI, −1.2 to −0.6] in symptom subscale, and −0.8 [95% CI, −1.1 to −0.5] in dysfunction subscale). Conclusions Acupuncture provides immediate functional recovery and pain relief for degenerative lumbar spinal stenosis. However, current evidence is insufficient to support the suggestion that acupuncture could offer clinical benefits as compared with noninsertive sham acupuncture for degenerative lumbar spinal stenosis.

Priapism is a relatively uncommon clinical presentation. The well-recognised causes are sickle cell anaemia and the use of medications, such as vasoactive erectile agents. Infrequently, it could be the result of lumbar spinal stenosis. The authors reported an elderly man with 1-year history of isolated intermittent priapism aggravated by walking. MRI showed lumbosacral spondylosis with severe stenosis at the level of L4–L5. Total laminectomy of L4 and L5 was done, resulting in a rapid and complete resolution of symptom without recurrence during the follow-up time of 10 years.

Aims The purpose of this study was to investigate the prevalence of sarcopenia and to examine its impact on patients with degenerative lumbar spinal stenosis (DLSS). Patients and Methods This case-control study included two groups: one group consisting of patients with DLSS and a second group of control subjects without low back or neck pain and related leg pain. Five control cases were randomly selected and matched by age and gender (n = 77 cases and n = 385 controls) for each DLSS case. Appendicular muscle mass, hand-grip strength, sit-to-stand test, timed up and go (TUG) test, and clinical outcomes, including the Oswestry Disability Index (ODI) scores and the EuroQol EQ-5D were compared between the two groups. Results The prevalence of sarcopenia, as defined by hand-grip strength, was significantly higher in the DLSS group (24%) when compared with the age- and gender-matched control group (12%) (p = 0.004). In the DLSS group, the sarcopenia subgroup demonstrated inferior results for the TUG test and ODI scores when compared with the non-sarcopenia subgroup (p = 0.006 and p = 0.039, respectively) after adjusting for age and gender. Conclusion This study demonstrated a higher prevalence of sarcopenia in patients with DLSS and highlighted its negative effect on clinical outcomes. Cite this article: Bone Joint J 2016;98-B:1093–8.

Introduction: Spinal stenosis mostly occur in lumbar spine and causes back pain, leg pain & neurogenic claudication. Although conservative treatment is mainstay, decompression with or without fusion (with or without instrumentation) can be considered in non-responsive cases. However, long term outcome of the surgery is controversial. The aim of our study was to analyze the outcome of surgery in lumbar spinal stenosis in terms of post-operative pain and claudication distance.Methods: A prospective analysis of patients who underwent decompression or decompression with fusion (with or without instrumentation), after failure of 3-6 months conservative treatment, for lumbar spinal stenosis were conducted. Only those who were operated and followed up for at least two years were included.Their preop and postop VAS score and walking distance compared.Results: Of 22 cases enrolled in this study, VAS score was improved in 21 patients and walking distance increased. Only one patient complained of increase in pain score at 24 months.Conclusion: Operative management is a good option for selected patients, 21 out of 22 have improved VAS and claudication distance in our study

Background: Most degenerative lumbar spinal stenosis (DLSS) patients primitively received the conservative treatment to control symptoms. In order to develop an optimal surgical treatment strategy, it is very significant to understand how the degenerative lumbar spondylolisthesis (DS) affects the effect of decompression in the DLSS. Thus, the aim of this current study was to explore whether the concomitant DS would affect the effect of decompression alone in the patients with DLSS. Methods: The current study was carried out at our hospital and it was approved through our institutional review committee of General Hospital of Ningxia Medical University. During the period from January 2015 to December 2017, in our study, we identified consecutive patients who received the minimally invasive laminectomy to treat the DLSS. The inclusion criterion included radicular leg pain or neurogenic claudication with the neurological symptoms associated with DLSS syndrome, magnetic resonance imaging of the lumbar spine reveals at least 1 level of serious stenosis, the conservative treatment failed for at least 3 months, and patients agreed to provide the postoperative details. The major outcomes of this present research was Oswestry Disability Index. Secondary outcomes of this current study involved visual analog score, short form-36, surgical revision rate as well as complications. Results: We assumed that previous DS possessed a negative effect on the postoperative results of the DLSS patients. Trial registration: researchregistry5943.

The aim of this study was to reveal whether demographic aspect, vertebral morphometry, and spine degeneration are associated with lumbar Schmorl’s nodes (SNs). A retrospective cross-sectional study was performed using data from the Department of Radiology (Carmel, Medical Center, Israel) for 180 individuals: age range between 40 and 99 years; 90 males and 90 females. All participants had undergone high-resolution CT scans for abdominal diagnostic purposes in the same supine position prior to our study, which enabled the processing of the scans in all planes and allowed a 3D reconstruction of the lower lumbar region. Eighty individuals (44.4%) had at least one SN along the lumbar spine, particularly at L3-4 level (30%). Vertebral body length (L1 to L3) and width (L1 and L4) were significantly greater in the SNs group compared to non-SNs group. On contrast, disc height (L3-4 and L4-5) was significantly lesser in SNs group than non-SNs group. SNs was significantly associated with smoking (X2= 4.436, P=0.02) and degenerative lumbar spinal stenosis (X2= 5.197, P=0.038). Moreover, the prevalence of SN was significantly greater in individuals with vacuum phenomenon and osteophytes formation (L1-2 to L4-5 levels). This study indicates that vacuum phenomenon on L3-4 (OR: 4.7, P=0.034), smoking habit (OR: 3.2, P=0.003), disc height loss of L4-5 (OR: 0.798, P=0.008), vertebral body length of L1 (OR: 1.37, P

Background In lumbar spinal stenosis (LSS), at most times, several levels are impaired and selecting the correct level remains a common problem for surgeons, as surgery remains invasive, and extended laminectomy may lead to secondary surgical complications. Therefore, helping to select the correct level may be useful for surgeons. The use of diffuse tensor imaging (DTI) and paraspinal mapping (PM) in addition to conventional magnetic resonance imaging (MRI) may be helpful (Chen et al., J Orthop Surg Res 11:47, 2016). However, with decompression levels determined by conventional magnetic resonance imaging (MRI) increasing, whether the benefits of reducing decompression level of conventional MRI + (DTI or PM) will be more obvious is unknown. Methods Reduced surgical levels that were different between levels determined by conventional MRI + (DTI or PM) and conventional MRI + neurogenic examination (NE) between groups were compared. Treatment outcome measures were performed at 2 weeks, 3 months, 6 months, and 12 months postoperatively. Results The reduced levels of three groups showed no statistically significant differences between each other except for two levels and four levels (two levels/three levels, p = 0.085; two levels/four levels, p = 0.039; three levels/ four levels, p = 0.506, respectively). Conclusions With surgical levels determined by conventional MRI increasing, the benefits of DTI and PM will be uncertainly more obvious.

Background: Neurogenic intermittent claudication (NIC) is the main symptom of degenerative lumbar spinal stenosis. Percutaneous interspinous process decompression devices (IPDs) have been designed as an alternative therapy to conservative treatment and to open decompressive surgery for patients suffering from NIC. Initial short-term results were encouraging. We present the long-term results of a group of patients that we followed to provide insight on long-term outcomes and effectiveness of this technique compared to other decompression methods. Methods: Fifteen patients operated for NIC by implantation of percutaneous IPDs have been prospectively monitored for reoperations or complications. Follow-up (FU) was interrupted if the patient was reoperated. Results were considered poor if the patient had to be reoperated at any stage of the FU or if the treatment failed to alleviate the pain after 6 months. Results were considered average if the patient still suffered some pain but did not require reoperation. Results: The patients were followed up to 7 years after the initial surgery. The mean length of the FU was 3.53 years and all patients could be followed. At the end of the FU, the results were good in only 20.0% (3/15), average in 13.3% (2/15) and poor in 66.7% (10/15). Conclusions: Despite initial satisfactory results, long-term FU is disappointing, with 80% poor or average results. The long-term reoperation rate is high (66.6%), increases over time and is higher than after implantation of IPDs for decompression augmentation. Although this technique is simple and safe, its effectiveness seems short-lived. We recommend cautious use and informing patients about the risk of relatively early failure and recurrence.

Although a number of prognostic factors have been demonstrated to be associated with surgical outcome of degenerative lumbar spinal stenosis (DLSS), no study has investigated the relation between hand grip strength (HGS) and treatment outcome of DLSS.The purpose of the present study was to examine the influence of HGS on surgical outcomes after surgery for patients with DLSS.This is an observational study.Patients who underwent spine surgery for DLSS were included in the study.Oswestry Disability Index (ODI), EuroQOL (EQ-5D), and visual analog scale (VAS) scores for back or leg pain were assessed.A total of 172 consecutive patients who underwent spine surgery for DLSS were included in the present study. Patients were assigned to either high HGS group (≥26 kg for men and ≥18 kg for women, n=124) or low HGS group (26 kg for men and18 kg for women, n=48) based on their preoperative HGS performance. Oswestry Disability Index, EQ-5D, and VAS scores for back and leg pain were assessed and compared between two groups preoperatively, 3 and 6 months after surgery. The primary outcome measure was baseline-adjusted ODI scores 6 months after surgery. The secondary outcome measures, including the overall ODI score, EQ-5D score, VAS score for back and leg pain, were assessed at each time point during the 6-month follow-up period.As primary outcome, baseline-adjusted ODI scores were significantly lower in the high HGS group than in the low HGS group 6 months after surgery. In the secondary outcome measurements, the ODI, EQ-5D, and VAS scores for back and leg pain improved significantly with time after surgery in both groups. The effects of HGS group on the overall changes in the ODI and EQ-5D scores during the 6-month period were significantly different between the two groups; however, they were not significantly different on VAS score for back and leg pain. The pattern of change in the ODI during the follow-up period was significantly different between the two groups.Patients with preoperative high HGS display better surgical outcome in terms of disability and health status 6 months after spine surgery. Preoperative HGS can act as a predictor of surgical outcome in patients with DLSS.

Degenerative lumbar spinal stenosis and spondylolisthesis are a common diagnosis seen in the primary care office. Symptoms of both conditions include neurogenic claudication and/or lower extremity radiculopathy. A thorough workup will help differentiate etiologies with overlapping symptoms, such as vascular claudication. For both conditions, the mainstay of treatment is nonsurgical in the absence of a neurologic deficit. A shared decision for surgical treatment is made with the patient and surgeon based on the impact on a patient’s quality of life.

Aim: The aim of our study was to compare clinical outcomes and examined the effect of simple decompression without additional fusion in patients with preoperative degenerative spondylolisthesis (DS) versus patients without preoperative degenerative spondylolisthesis (non-DS) on one or two adjacent levels. Methods: For this retrospective analysis we did use data from the Lumbar Stenosis Outcome Study (LSOS). The LSOS is conducted as a prospective cohort study at eight medical centers in Switzerland. The main outcomes of this study were change in SSM symptoms, SSM function, and EQ-5D-EL sum score over time. These outcomes were measured at baseline, six, and 12-month follow-up. To obtain an unbiased effect of DS versus non-DS we chose matching techniques relying on propensity scores. Results: For this study, 853 potentially eligible patients agreed to participate between December 2010 and December 2015. Of these, 350 patients underwent decompression alone surgery within the first six months after baseline. Out of these, 133 patients met the inclusion criteria, with accompanying DS (n = 32) or without DS (n = 101). The estimated effects of DS versus non-DS for change in SSM symptoms from baseline to 6 and 12 months were 0.08 (95% CI −0.34 to 0.49) and 0.16 (−0.23 to 0.55), respectively. For change in SSM function, the estimated effects were −0.01 (−0.39 to 0.37), and 0.08 (−0.33 to 0.50). Changes in between group difference of EQ-5D-EL sum score were estimated to be −7.19 (−15.24 to 0.86) and −4.88 (−13.29 to 3.54) from baseline to 6 and 12 months. None of the group differences between the non-DS and the DS group were statistically significant. All matched patients improved over time in all secondary outcomes. Conclusion: Among the patients with degenerative lumbar spinal stenosis our study demonstrates that in the two groups, degenerative spondylolisthesis and non-degenerative spondylolisthesis, patients distinctively take advantage of simple decompression without fusion. Our results indicate that the presents of a preoperative degenerative spondylolisthesis does not worsen outcome in comparison to non-olisthesis cases when treated by simple decompression. Conversely, our results could indicate that adding fusion in preoperative olisthesis cases might only be reserved for certain patients.

dLSS is a clinical definition which describes a small spinal canal diameter commensurate with standing and walking limitations due to back and/or leg pain.

Objective. To analyze the reasons for revision surgery after decompression and stabilization in patients with degenerative lumbar spinal stenosis. Material and Methods. A total of 308 patients with degenerative lumbar spinal stenosis were operated on. They underwent decompression and stabilization surgery using transpedicular fixation involving from 1 to 8 spinal motion segments. Results. Clinical manifestations of radiculopathy and back pain were completely eliminated in 166 (53.9 %) patients. Another 86 (27.9 %) patients reported the absence of radicular pain syndrome with sustained mild low back pain during physical exertion. Significant reduction in radicular and low back pain was achieved in 49 (15.9 %) patients. Poor long-term results of surgical treatment requiring revision surgery in the long-term period were detected in 30 (16.1 %) patients. Conclusion. Multi-level surgery for lumbar spinal stenosis increases the risk and probability of indications for revision in the long-term period. When performing extended decompression and stabilization procedure at four or more spinal motion segments including the L5-S1segment stabilization, it is advisable to insert caudal pedicle screws into posterior portions of the os illium instead of the S1 vertebral body. Hir. Pozvonoc. 2014;(1):86-93.

Degenerative lumbar spinal stenosis (LSS) and lumbar spondylolisthesis (DS) can lead to significant disability and impaired quality of life. In select patients with predominantly leg-dominant symptoms that have exhausted nonoperative treatment, surgical treatment can provide significant improvement in symptoms. The present paper reviews the clinical evaluation, radiographic findings, and surgical decision making of both spinal stenosis and degenerative spondylolisthesis using the current best available evidence.

Lumbar spinal canal stenosis (LSCS) associated with degenerative scoliosis has being increasingly aware by the public and studied by many researchers. Degenerative changes leading to spinal stenosis can precede a spinal deformity which will develop into the de novo scoliosis. There are few studies focusing on the risk factors contributing to the degenerative lumbar scoliosis (DLS) in lumbar spinal stenosis patients. From September, 2017 to December, 2017, 181 patients who were diagnosed with LSCS in the outpatient department of our hospital were enrolled in this retrospective investigation. The patients were divided into 2 groups: DLS group (Cobb angle >10°) and LSCS group. Sex, age, smoking status (yes or no), occupation (heavy or light labor), body mass index (BMI), bone mineral density (BMD) and radiographic parameters including the lumbar lordosis (LL), pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), thoracic kyphosis (TK), coronal vertical axis, and sagittal vertical axis (SVA) are all evaluated as potential risk factors. Multivariate logistic regression analysis and receiver-operating characteristic curves were used to identify potential risk factors. Forty-five of 181 patients were diagnosed with DLS and involved in the DLS group. There were significant differences between the 2 groups in BMI (P 25.57 kg/m2 (AOR 1.270, 95% CI 1.040–1.551, P = .019), and SVA >3.98 cm (AOR 3.651, 95% CI 2.226–5.990, P 25.57 kg/m2, and SVA >3.98 cm were the potential risk factors for the formation of degenerative lumbar scoliosis based on degenerative lumbar spinal stenosis.

Background Minimally invasive decompressive procedures have evolved into the modern standard surgical solution for degenerative lumbar spinal stenosis (DLSS) patients, such as the bilateral laminotomy and the unilateral laminotomy for bilateral decompression (ULBD) that is characterized by ipsilateral and contralateral microdecompression under the midline posterior structures and has been successfully used with proven efficacy. Objective To compare the effect of the size of the skin incision and the method of handling the multifidus muscle on the clinical outcomes of the endoscopic laminotomy versus the standard microscopic laminotomy for DLSS. Patients and methods Primary outcome data included the numerical rating scale for back and leg symptoms and Oswestry Disability Index to quantify pain and disability, respectively. Secondary outcome data included operative time, blood loss, and modified Mcnab criteria. Results At the end of the follow-up period, the rate of successful outcome of the endoscopic group was 87.2 and 77.8% for the control group after initial improvement by 87% at 3-month follow-up. The incidence of complications was 13% in both groups. Conclusion For DLSS, the endoscopic ULBD in experienced hands would have a better outcome than the microscopic ULBD regarding the postoperative clinical outcome and patient satisfaction.

Degenerative spinal stenosis is a common lumbar condition in the elderly population. Clinical decision-making in the physiotherapy settings is based on assessments of the patients physical status. The purpose of this study was to examine how self-reported measures on symptoms and physical function relate to responses on physical performance tests.A total of 103 patients with LSS completed a comprehensive questionnaire and physical performance tests (functional leg-strength and dynamic balance). Associations between the subscales Symptom Severity (SYMP) and Physical Function (FUNC) from the Spinal Stenosis Questionnaire, and the performance tests were examined. Univariate correlation and multivariable linear regression analyses were applied.The associations between SYMP or FUNC and the performance tests were moderate (?0.3 rho 0.6). The multivariable analyses showed that One-leg-Stand, 30s sit-to-stand were significantly associated with SYMP ( 0.001 p 0.03), whereas Stairclimb, was significantly associated with FUNC ( 0.001 p 0.005). The explained variance was fair for both adjusted models (RThe present study indicates that both self-reported symptoms and walking limitation are associated with leg strength, while only symptoms are associated with balance. The results suggest that a combination of simple performance tests will add information needed to map the patients disability and guide interventions. Implications for Rehabilitation One-leg-standing, 30-s sit-to-stand and stair climb test are easy to use and applicable for examining physical function in patients with lumbar spinal stenosis (LSS). Simple performance tests add information needed to map the patients' disability and guide interventions. Leg strength is a key factor for both symptoms and walking ability. Also, balance is of importance for the symptoms in LSS patients.

Objectives To analyze whether multifidus degeneration has a relationship with degenerative lumbar spinal stenosis (LSS). Materials and methods Clinical data of 40 patients with LSS were analyzed retrospectively. Moreover, 40 healthy people were selected as controls. Subjects of both groups underwent a 1.5-T lumbar spinal magnetic resonance imaging scan in our hospital, and then the multifidus muscularity, fatty infiltration ratio, and bilateral asymmetry at L4/5 level on magnetic resonance imaging were measured with ImageJ software to analyze and compare the multifidus parameters between the 2 groups. Results Compared with the control group, the multifidus muscularity was lower, fatty infiltration ratio was greater, and muscle asymmetry was more significant at the L4/5 level in patients with LSS, and the difference between the 2 groups was statistically significant. Conclusions Multifidus degeneration, including reduced volume, increased fatty infiltration, and bilateral muscle asymmetry, has an association with LSS.

COMMENTARY ON: Lee S, Kim CH, Chung CK, Park SB, Yang SH, et al. Risk factor analysis for postoperative urinary retention after surgery for degenerative lumbar spinal stenosis. Spine J 2017:17:469–77 ( in this issue ).

Purpose Evaluation of the efficacy of the Falena® and Aperius™ PerCLID™ interspinous devices in the treatment of degenerative lumbar spinal stenosis with neurogenic intermittent claudication refractory to conservative treatment. Materials and methods We retrospectively analyzed data from 24 patients (20 male and 4 female patients; 61 ± 7 years old), treated with an implantation of the AperiusTM PerCLID™ system, and from 35 patients (29 male and 6 female patients; 65 ± 9 years old) treated with the Falena® interspinous device. Patient pain intensity was evaluated by a 10-point visual analog scale (VAS), with a score (ranging from 0 = no pain to 10 = unbearable pain) that was collected before the procedure, at baseline; and at months 1, 6 and 12 after the interventional procedure. The assessment of quality of life (QOL) impairment was evaluated by the Oswestry Disability Index (ODI) questionnaire, which was administered beforehand at baseline; and at months 1, 6 and 12 after the interventional procedure. The vertebral canal area was measured by magnetic resonance imaging (MRI) scans before the treatment and at the one-year follow-up. Results All patients completed the study with no complications. Both the Falena group and Aperius group of surgery patients showed a statistically significant reduction of their VAS and ODI scores at the 6- and 12-month follow-up ( p Conclusions The implantation of Falena® and Aperius™ PerCLID™ interspinous devices is an effective and safe procedure, in the medium term.

Background Incidental durotomy is a well-known complication during surgery for degenerative lumbar spinal stenosis (DLSS). In this prospective multicenter cohort study including eight medical centers our aim was to assess whether incidental durotomy during first-time lumbar spinal stenosis decompression surgery without fusion has an impact on long-term outcome. Methods Patients of the multi-center Lumbar Stenosis Outcome Study (LSOS) with confirmed DLSS undergoing first-time decompression without fusion were enrolled in this study. Baseline patient characteristics and outcomes were analyzed at 6, 12, and 24 months follow-up respectively with the Spinal Stenosis Measure (SSM), the Numeric Rating Scale (NRS), Feeling Thermometer (FT), the EQ-5D-EL, and the Roland and Morris Disability Questionnaire (RMDQ). Results A total of 167 patients met the inclusion criteria. Fifteen (9 %) of those patients had an incidental durotomy. Baseline characteristics were similar between the durotomy and no-durotomy group. All patients improved over time. In the group of durotomy patients, the median improvement in SSM symptoms scale was 1.1 points at 6 months, 1.1 points at 12 months, and 1.6 points at 24 months after baseline. For the no-durotomy group, these improvements were 0.8, 0.9, and 0.9. For SSM function the improvements were 1.0, 0.8, and 0.9 in the durotomy group, and 0.6, 0.8, and 0.8 in the no-durotomy group. None of the between-group differences were statistically significant. Conclusions Incidental durotomy in patients with DLSS undergoing first-time decompression surgery without fusion did not have negative effect on long-term outcome and quality of life. However, only 15 patients were included in the durotomy group but these findings remained even after adjusting for observed differences in baseline characteristics.

Lumbar spinal stenosis has become one of the most disabling pathologies in the elderly population. Some additional conditions such as foraminal stenosis or degenerative spondylosis with a history of back pain and leg pain must be considered before treatment. A completely appropriate protocol and unified management of spinal stenosis have not yet been well defined. The objective of this literature review is to provide evidence-based recommendations reflected in the highest-quality clinical literature available to address key clinical questions surrounding the management of degenerative lumbar spinal stenosis. Cite this article: Covaro A, Vilà-Canet G, García de Frutos A, Ubierna MT, Ciccolo F, Caceres E. Management of degenerative lumbar spinal stenosis: an evidence-based review article. EFORT Open Rev 2016;1:267-274. DOI: 10.1302/2058-5241.1.000030.

Background Laminotomy is one of the surgical treatments for spinal stenosis. Method We conducted a prospective study including 58 patients with mean follow-up of 37.5 months, successful rate was 72%. Result There were significant improvement of mean Japanese Orthopaedic Association lumbar score, Oswestry Disability Index(ODI), and visual analogue scale (VAS). Male had significantly better result in ODI and VAS. There was no significant difference regarding to older age (>65) or the presence of preexisting degenerative spondylolisthesis. One patient was found to have increased lumbar instability after operation. The overall reoperation rate was 6.9%.

Degenerative lumbar spinal stenosis (DLSS) has become increasingly common and is characterized by multilevel disc herniation and lumbar spondylolisthesis, which are difficult to treat. The current study aimed to evaluate the short-term clinical outcomes and value of the combined use of microendoscopic discectomy (MED) and minimally invasive transforaminal lumbar interbody fusion (MI-TLIF) for the treatment of multilevel DLSS with spondylolisthesis, and to compare the combination with traditional posterior lumbar interbody fusion (PLIF). A total of 26 patients with multilevel DLSS and spondylolisthesis underwent combined MED and MI-TLIF surgery using a single cage and pedicle rod-screw system. These cases were compared with 27 patients who underwent traditional PLIF surgery during the same period. Data concerning incision length, surgery time, blood loss, time of bed rest and Oswestry Disability Index (ODI) score prior to and following surgery were analyzed statistically. Statistical significance was reached in terms of incision length, blood loss and the time of bed rest following surgery (P

The incidence of symptomatic osteoarthritis of the hip and degenerative lumbar spinal stenosis is increasing in our aging population. Because the subjective complaints can be similar, it is often difficult to differentiate intra- and extra-articular hip pathology from degenerative lumbar spinal stenosis. These conditions can present concurrently, which makes it challenging to determine the predominant underlying pain generator. A thorough history and physical examination, coupled with selective diagnostic testing, can be performed to differentiate between these clinical entities and help prioritize management. Determining the potential benefit from surgical intervention and the order in which to address these conditions are of utmost importance for patient satisfaction and adequate relief of symptoms.

The U.S. population is living longer and staying increasingly more active. Symptoms of degenerative lumbar spinal stenosis are being seen with increasing frequency in older age groups. Many of the more symptomatic patients do not respond to nonoperative care and seek potential surgical solutions. The current article offers an evidence-based review of the literature for surgical treatment of degenerative lumbar spinal stenosis with a focus on the role of lumbar fusion. The author evaluates the evidence for surgical treatment of this condition so that appropriate, patient-centered care can be provided in the safest and most cost-effective manner possible.

As life expectancy increases, degenerative lumbar spinal stenosis (DLSS) becomes a common health problem among the elderly. DLSS is usually caused by degenerative changes in bony and/or soft tissue elements. The poor correlation between radiological manifestations and the clinical picture emphasizes the fact that more studies are required to determine the natural course of this syndrome. Our aim was to reveal the association between lower lumbar spine configuration and DLSS. Two groups were studied: the first included 67 individuals with DLSS (mean age 66 ± 10) and the second 100 individuals (mean age 63.4 ± 13) without DLSS-related symptoms. Both groups underwent CT images (Philips Brilliance 64) and the following measurements were performed: a cross-section area of the dural sac, vertebral body dimensions (height, length and width), AP diameter of the bony spinal canal, lumbar lordosis and sacral slope angles. All measurements were taken at L3 to S1. Vertebral body lengths were significantly greater in the DLSS group at all levels compared to the control, whereas anterior vertebral body heights (L3, L4, L5) and middle vertebral heights (L3, L5) were significantly smaller in the LSS group. Lumbar lordosis, sacral slope and bony spinal canal were significantly smaller in the DLSS compared to the control. We conclude that the size and shape of vertebral bodies and canals significantly differed between the study groups. A tentative model is suggested to explain the association between these characteristics and the development of degenerative spinal stenosis.

AIM The intention of this retrospective analysis with follow-up was to assess results after decompressive or additional stabilising operations in the clinical setting of degenerative lumbar spinal stenosis. METHOD 74 patients, operated upon from 1995 to 2001, were investigated clinically, radiologically and with questionnaire score 1 to 8 years (mean 2.5) postoperatively. All data were compared and evaluated with the preoperative findings. The results of the group with decompressive operations were compared with those for the group with additional stabilising operations. RESULTS The patients with stabilising operations showed an improvement of 78.3% on the visual analogue scale and of 76.1% on the Oswestry score. The patients with decompressive operations showed an improvement of 91.7% on the visual analogue scale and of 75.0% on the Oswestry score. The difference between the two groups was not significant. There was a poorer outcome for previously operated patients or patients with a prolonged course of disease. CONCLUSION The choice of the operative treatment with regard to spinal stenosis requires a differentiated preoperative diagnostic procedure in accord with the respective living situation and age of the patients. Instability in terms of degenerative spondylolisthesis, lumbar scoliosis as well as intraoperatively recognised or generated instability has to be additionally stabilised with an instrumented fusion in regard to the functional aspect of the stenosis.

There are several nonsurgical alternatives to treat radicular pain in degenerative lumbar spinal stenosis. Epidural steroid injections have been used for several decades, but the different studies have shown variable effects. Searching in Epistemonikos database, which is maintained by screening 30 databases, we identified nine systematic reviews including seven pertinent randomized controlled trials. We concluded epidural steroid injection probably leads to little or no effect on reducing radicular pain of spinal stenosis.Existe una variada cantidad de alternativas no quirúrgicas para tratar el dolor radicular producido por la raquiestenosis lumbar degenerativa. Los corticoides epidurales se utilizan desde hace varias décadas, sin embargo la eficacia reportada en la literatura es muy variable. Utilizando la base de datos Epistemonikos, la cual es mantenida mediante búsquedas en 30 bases de datos, identificamos nueve revisiones sistemáticas que en conjunto incluyen siete estudios aleatorizados. Realizamos un metanálisis y tablas de resumen de los resultados utilizando el método GRADE. Concluimos que la inyección de corticoides epidurales probablemente tiene poco o nulo efecto en reducir el dolor radicular por estenorraquis.

The purpose of this study was to evaluate the effects of 12-week aqua walking and jogging program on muscle function, ankle range of motion (ROM), balance and fell efficacy in degenerative lumbar spinal stenosis (DLSS) patients. Six patients (2 males, 4 females) with DLSS participated in aquatic exercise program 3 times per week with each session of 60 min (warming-up, aqua walking, aqua jogging and cool down) at 1 m 20 cm-1 m 30 cm deep pool. Janda's muscle function test, ankle ROM, Berg balance scale (BBS) and fall efficacy scale (FES) were analyzed before and after the training intervention. We found significant increases in balance, muscle function, ankle ROM and fall efficacy after training intervention. In conclusion, aquatic exercise seems to affect physical function and fall efficacy positively in elderly DLSS patients.

A paucity of objective outcome measures exists for assessing movement disorders, including degenerative lumbar spinal stenosis (LSS). Fitts's Law provides a novel approach to clinical outcome measurement since performance is resistant to learning, and task difficulty can be altered. The objective of the present study was to compare, using a Fitts's task, movement performance of individuals with and without LSS to determine if motor difficulties that arise with LSS impede the planning, initiation, or execution of deliberate lower limb movements. Twelve pre-surgical LSS patients and twelve control participants from the community performed a Fitts's Law (foot reaching) task, while LSS participants also completed pain and disability questionnaires. Fitts's Law was evident for both groups, however the LSS group's movements were more adversely impacted as task difficulty increased. Specifically, the LSS group's movement time and time to peak velocity (ttPV) increased as task index of difficulty increased, while peak velocity decreased. Correlations between ttPV and leg pain, and with stenosis impairment severity respectively, provided evidence that less support leg pain and less stenosis impairment severity yield faster ttPV in the moving leg at the highest index of difficulty. Therefore a lower extremity Fitts's Law task captured differences in the planning and execution of leg movements between healthy and LSS populations.

Study designA retrospective study of computed tomography (CT) myelographic images in patients with degenerative lumbar spinal stenosis (LSS).ObjectivesTo introduce a new technique for the quantitative evaluation of LSS.BackgroundAdvances in hardware and software technology now permit inexpensive digitalization of radiological images, and enable methodologies for quantifying space available for neural elements in spinal canal. However, a valid method with quantitative evaluation of spinal stenosis in living patients has not been developed yet.Methods and materialsPreoperative CT myelographic scans of 50 patients with degenerative LSS were collected for retrospective investigation. The patients subsequently underwent lumbar decompressive surgery. They included scans from thoracic vertebra 12 (T12) to sacrum (S1), in which each segment was scanned through both the vertebral body and disk. All CT scan films were digitized using a high-resolution digital camera. ImageTool™ software was used to measure three parameters: cross-sectional area of dural sac at disk level (A), cross-sectional area of spinal canal at midpedicular level (B), and cross-sectional area of vertebral body (C). The dural sac canal ratio (DSCR) was calculated as A/ B×100%. Low DSCR implied severe dural sac compression with a high degree of stenosis. The spinal canal vertebral ratio (CVR) was also calculated as B/ C×100%. Low CVR implied a low baseline of canal capacity for neural elements. They were calculated from T12 to S1.ResultsThe study consisted of 26 male and 24 female patients, with an average age of 68.4 (35–97) years. A total of 295 segments were evaluated, of which 118 (40%) were surgically decompressed. There were wide ranges of canal cross-sectional areas (140–475 mm2) and dural sac cross-sectional area (54–435 mm2). Male patients had a slightly larger canal cross-sectional area than female patients at each level. The mean CVR was found decreased from T12 (26.1%) to L4 (18.3%). This was higher in female than in male patients, especially from T12 to L2 ( P < 0.01). There were significant correlations between spinal canal and dural sac cross-sectional area ( r = 0.55, P < 0.001), and also between CVR and DSCR ( r = 0.31, P < 0.001). Of the levels decompressed, 82% was performed from the level L2 to L5, in which there was no significant difference in canal cross-sectional area and CVR between decompression and nondecompression ( P > 0.05). There was a good correspondence between decreasing mean DSCR and increasing percentile of levels decompressed.ConclusionDSCR represents a useful method for the quantitative diagnosis of lumbar spinal canal stenosis. ImageTool™ software is a useful tool in measuring spinal morphometry.

COMMENTARY ON Kreiner DS, Shaffer WO, Baisden JL, et al. An evidence-based clinical guideline for the diagnosis and treatment of degenerative lumbar spinal stenosis (update). Spine J 2013;13:734–43 ( in this issue ).

Nonoperative treatment for lumbar spinal stenosis must address anatomic and biomechanical factors. The entire functional kinetic chain and patient specific goals must be considered. In addition to passive modalities, manual therapy, and patient education, an active program consisting of flexion-based lumbar stabilization exercises, hip mobilization, proprioceptive training, and general conditioning should be initiated. More studies are needed to establish the benefit of a comprehensive, multifaceted treatment approach and to prove its clear benefit over the natural history of lumbar spinal stenosis.

OBJECTIVE The purpose of this study was to compare the quality of life of patients with lumbar spinal stenosis (LSS) with that of the controls' and to investigate the factors related with the quality of life in LSS. METHODS Fifty-four patients with LSS were included in the study whose diagnosis were made by clinically and magnetic resonance imaging (MRI). Control group consisted of age and sex matched 54 individuals. Both of the patient and control groups were evaluated with the Short Form-36 (SF-36) health survey and Hospital Anxiety Depression Scale (HADS). The Oswestry Pain and Disability Index (ODI) was used for the assessment of the disability. RESULTS SF-36 scores in the LSS group was lower than that of the controls'. There was a significantly positive correlation between the SF-36 scores and walking distance in LSS group. A moderately negative correlation was found between the SF-36 and the ODI, HADS anxiety and depression scores. There was a significantly positive correlation between the ODI and the HADS anxiety and depression scores. HADS anxiety and depression scores in the patient group were significantly higher than that of the controls'. CONCLUSIONS As a result, quality of life was decreased in subjects with LSS. The factors related with the quality of life were the walking distance, severity of the disability and emotional status in LSS.

Aim: Epidural steroid injections are one of the treatment modalities for degenerative lumbar spinal stenosis (DLSS) patients although the efficacy of injection therapies has not yet been made clear. This study aims to analyses the effects of single-shot interlaminar lumbar epidural steroid injections (ILESI) under fluoroscopic guidance in DLSS patients. Material and Method: 115 patients who were treated in Pain Clinic of Ordu Training and Research Hospital between November 1, 2009 and October 31, 2010 were retrospectively evaluated. These 115 patients underwent ILESI under the guidance of fluoroscopy for degenerative lumbar spinal stenosis.Afterwards, ILESI, patients were followed up regularly in the 1st, 3rd, 6th, 9th and 12th month. Satisfaction scores were evaluated using the North American Spine Society Scale. Results: A total of 72 patients were included in this study. In the 1st, 3rd, 6th, 9th and 12th month, the number of patients who were followed were 72 (100%), 62 (85%), 57 (78.1%), 46 (63%), and 30 (41.1%), respectively. Pre-injection VNRS scores were average 7.9 ± 1.6. Post-injection, VNRS scores in months 1,3,6,9 and 12, dropped significantly (p

The objective of this study was to evaluate the influence of decreased dural sac cross-sectional area and baseline clinical parameters on the outcome of patients treated surgically or conservatively for lumbar spinal stenosis. Computed tomography or magnetic resonance imaging scans of 37 patients were digitized and the dural sac cross-sectional area was calculated. This parameter and baseline clinical, socioeconomic, and anthropometric data of the patients were correlated with 1-year and 2-year follow-up data. The decrease in dural sac cross-sectional area negatively affected walking capacity on follow-up controls in patients treated conservatively, whereas such a relation was not observed among surgically treated patients. Female sex was the main parameter that worsened the global outcome of degenerative lumbar spinal stenosis, particularly after surgical treatment.