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The proportion of postoperative retears after arthroscopic rotator cuff reconstruction remains constant despite advancement of suture techniques and improved anchor implants. The commonly degenerative nature of rotator cuff tears can carry the risk of compromised tissue. Several techniques have been developed to biologically enhance rotator cuff repair, and a considerable number of autologous, allogeneic, and xenogenous augmentation methods have been described. This article introduces the biceps smash technique, an arthroscopic augmentation procedure for posterosuperior rotator cuff reconstruction using an autograft patch of the long head of the biceps tendon.

Case Two months after anterior shoulder dislocation and spontaneous reduction, a 41-year-old man presented movement-related shoulder pain and a functional deficit. An initially missed osteochondral shearing injury of the humeral head with a Bankart lesion was diagnosed. Due to an extensive posteroinferior defect, an open reduction and internal fixation (ORIF) using bioabsorbable chondral darts was performed. At the 1-year follow-up, magnetic resonance images showed a completely healed osteochondral fragment and the patient presented an unrestricted shoulder function. Conclusion Even in missed osteochondral shear injuries, ORIF with bioabsorbable implants can be associated with an excellent functional outcome and sufficient integrity of the fragment. The absorbable implants are biocompatible, therefore the risk of revision surgery due to implant irritations is minimized.

BACKGROUND: Metallic humeral and glenoid lateralized implants have been developed to prevent common problems that can emerge using Grammont’s concept (ie, medialization of center of rotation, decreased humeral offset, scapular notching) in reverse shoulder arthroplasty. The purpose of this study was to evaluate the clinical and radiological results of metallic humeral and glenoid lateralized implants for cuff tear arthropathy (CTA) and primary osteoarthritis (OA). METHODS: In this prospective study, patients with CTA or OA who underwent reverse shoulder arthroplasty using augmented base plates for glenoid lateralization and a “curved stem” design for the humeral side were included. The Constant-Murley score and Subjective Shoulder Value were documented at 1- and 2-year follow-ups. Radiographs were reviewed for scapular notching, instability, loosening, osteolysis, ossification, bone resorption, or fractures. Lateralization and distalization shoulder angles were evaluated at the final follow-up. RESULTS: There were 23 patients with CTA and 19 patients with OA (27 women; mean age, 76 years; range, 59-85) available for examination at 2 years. Both groups increased significantly in all outcome measures compared with baseline (P

BACKGROUND Reverse shoulder arthroplasty (RSA) with a lateralized design is thought to improve outcomes. Our aim was to compare RSA with the classic Grammont prosthesis against a prosthesis with 135° inclination and a lateralized glenosphere for cuff-deficient shoulders. METHODS Patients with irreparable massive posterosuperior rotator cuff tear Hamada grade 1-3 underwent RSA and were documented prospectively up to 24 months postsurgery. Comparative RSA groups were "lateralized" (L), with 135° humeral inclination and 36+4-mm lateralized glenosphere (n = 44), and "Grammont" (G), with 155° humeral inclination and 36+2-mm eccentric glenosphere (n = 23). Range of motion including the Apley scratch test, abduction strength, Constant-Murley score (CS), and Shoulder Pain and Disability Index (SPADI) were assessed. Anteroposterior and axial radiographs were evaluated at 24 months, and additional measurements of scapular neck and glenoid anatomy, baseplate and glenosphere position, center of rotation, humeral offset, and lateralization and distalization shoulder angles were made. Linear regression and mixed models adjusted for sex differences and preoperative values were applied. RESULTS Overall CS and SPADI outcomes were not significantly different between groups (P ≥ .654). For group L, external rotation remained stable up to the 2-year follow-up and was higher than for group G (P = .012 ); a greater proportion of group L patients could reach the lumbar vertebra 3 (L3) (70% vs. 48% in group G) (P = .26). Group G had a higher inferior glenosphere overhang (P = .020) and center of rotation (COR) medialization (P < .001), whereas group L had higher humeral offset (P < .001) and lateralization shoulder angle (P < .001) with a trend toward higher baseplate positioning (P = .045). The rate of scapular notching was 2.9 times higher for group G than group L (P = .001). CONCLUSION RSA with 135° humeral inclination and a lateralized glenosphere shows similar outcome scores as the classic Grammont design but enables better preservation of external rotation and reduces the rate of scapular notching compared with the classic Grammont design in Hamada 1-3 patients with irreparable posterosuperior tears.

Background. Prediction models for outcomes after orthopedic surgery provide patients with evidence-based post-operative outcome expectations. Our objectives were (1) to identify prognostic factors associated with the post-operative shoulder function outcome of the Oxford Shoulder Score (OSS) and (2) to develop and validate a prediction model for post-operative OSS. Methods. Patients undergoing arthroscopic rotator cuff repair (ARCR) were prospectively documented at a Swiss orthopedic tertiary care center. The first primary ARCR in adult patients with a partial or complete rotator cuff tear were included between October 2013 and June 2021. Twenty-two potential prognostic factors were used for prediction model development. Three sets of factors were compared in terms of overall performance (using Akaike’s Information Criterion and model bias) and discriminative ability (using R squared and Root Mean Squared Error). Results. A complete-case analysis of 1,310 patients was performed. Set 3 retained the following factors: age, sex, American Society of Anesthesiologists (ASA) classification, number of pre-operative steroid infiltrations, baseline OSS, baseline level of depression and anxiety, infraspinatus tear, tendon delamination and acromioclavicular joint resection. Linear regression and Tobit models had similar performance on both the training (R squared = 0.201 and 0.201, respectively) and test sets (R squared = 0.119 and 0.123, respectively). The Tobit model was slightly more consistent than the linear regression model after bootstrap validation (R squared = 0.189 compared to 0.161). Conclusion. A prediction model for patients undergoing ARCR was developed to provide patients and surgeons with individualized expectations for post-operative shoulder function outcomes.

Background Finite element analysis has suggested that stemless implants may theoretically decrease stress shielding. The purpose of this study was to assess the radiographic proximal humeral bone adaptations seen following stemless anatomic total shoulder arthroplasty. Methods A retrospective review of 152 prospectively followed stemless total shoulder arthroplasty utilizing a single implant design was performed. Anteroposterior and lateral radiographs were reviewed at standard time points. Stress shielding was graded as mild, moderate, and severe. The effect of stress shielding on clinical and functional outcomes was assessed. Also, the influence of subscapularis management on the occurrence of stress shielding was determined. Results At 2 years postoperatively, stress shielding was noted in 61 (41%) shoulders. A total of 11 (7%) shoulders demonstrated severe stress shielding with 6 occurring along the medial calcar. There was one instance of greater tuberosity resorption. At the final follow-up, no humeral implants were radiographically loose or migrated. There was no statistically significant difference in clinical and functional outcomes between shoulders with and without stress shielding. Patients undergoing a lesser tuberosity osteotomy had lower rates of stress shielding, which was statistically significant ( p = 0.021) Discussion Stress shielding does occur at higher rates than anticipated following stemless total shoulder arthroplasty, but was not associated with implant migration or failure at 2 years follow-up. Level of evidence IV, Case series.

Background There is still a disagreement on the postoperative rehabilitation concerning position of immobilization of the shoulder after arthroscopic anterior shoulder stabilization and its influence on the clinical outcome. The aim of this study was to evaluate the clinical results and the recurrence rate after arthroscopic anteroinferior shoulder stabilization and postoperative immobilization in internal rotation vs. external rotation. Methods Twenty-five patients (22 male and 3 female, mean age 28.5 years) were included in this prospective nonrandomized cohort study. In group I (11 male, 2 female, mean age 28 years), the postoperative functional immobilization was carried out in internal rotation of 60°, and in group II (11 male, 1 female, mean age 30 years), 15° of external rotation of the arm for 4 weeks in both groups. The clinical follow-up was performed at 2, 4, and 6 weeks as well as at 3, 6, and 12 months postoperatively including assessment of range of motion and functional shoulder scores (Subjective Shoulder Value, Constant score, Rowe score, Walch Duplay score, Melbourne Instability Shoulder Score). Furthermore, shoulder instability was evaluated using the apprehension, relocation, and surprise tests. Mid-term follow-up data were additionally assessed after a minimum of 4 years. Results Twenty patients (19 male and 1 female) with an average age of 28 years were followed up for 62 (53-72) months after arthroscopic stabilization. The comparison of both groups showed almost equal results regarding the range of motion without any significant differences (P > .05). The evaluation of the shoulder function scores also showed no significant differences with an average Subjective Shoulder Value of 95% vs. 91%, Constant score of 89 vs. 88 points, Rowe score of 96 vs. 94 points, Walch Duplay score of 86 vs. 89 points, Melbourne Instability Shoulder Score of 96 points, and Western Ontario Shoulder Instability Index of 88% vs. 84% (P > .05). There was no recurrent dislocation in both groups. Conclusion The type of immobilization after arthroscopic shoulder stabilization does not influence the clinical results after a mid- to long-term follow-up.

Background: Postoperative shoulder stiffness (POSS) is a prevalent adverse event after arthroscopic rotator cuff repair (ARCR) that is associated with major limitations in everyday activities and prolonged rehabilitation. Purpose/Hypothesis: The purpose was to develop a predictive model for determining the risk of POSS within 6 months after primary ARCR. We hypothesized that sufficient discrimination ability of such a model could be achieved using a local institutional database. Study Design: Case-control study; Level of evidence, 3. Methods: Consecutive primary ARCRs documented in a local clinical registry between 2013 and 2017 were included, and patients who experienced POSS before the final clinical 6-month follow-up were identified. A total of 29 prognostic factor candidates were considered, including patient-related factors (n = 7), disease-related factors (n = 9), rotator cuff integrity factors (n = 6), and operative details (n = 7). We used imputed data for the primary analysis, and a sensitivity analysis was conducted using complete case data. Logistic regression was applied to develop a model based on clinical relevance and statistical criteria. To avoid overfitting in the multivariable model, highly correlated predictors were not included together in any model. A final prognostic model with a maximum of 8 prognostic factors was considered. The model’s predictive accuracy was assessed by the area under the receiver operating characteristic curve (AUC). Internal validation was performed using bootstrapping. Results: Of 1330 ARCR cases (N = 1330 patients), 112 (8.4%) patients had POSS. Our final model had a moderate predictive ability with an AUC of 0.67. The predicted risks of POSS ranged from 2.3% to 38.9% and were significantly higher in women; patients with partial tears, low baseline passive shoulder abduction, and lack of tendon degeneration; and when no acromioplasty was performed. Conclusion: A prognostic model for POSS was developed for patients with ARCR, offering a personalized risk evaluation to support the future decision process for surgery and rehabilitation.

The application of reverse shoulder arthroplasty (RSA) has risen in the past decades especially due to its excellent long-term outcomes. With this positive trend, the indications for RSA have gradually extended to a broader age spectrum. The objective of this study was to identify the benefits of primary RSA in an advanced geriatric population with considerable comorbidity burden and higher perioperative risk.For this observational study using data collected from our local RSA register, we identified 73 patients (77% female) with a minimum age of 85 years (range: 85-93 years) at the time of surgery and a complete 24-month postoperative follow-up. Clinical evaluations of pain, Subjective Shoulder Value, Constant score, Shoulder Pain and Disability Index, quality of life (European Quality-of-Life 5-Dimension 5-Level utility), and patient satisfaction were made. Radiographic evaluation followed an international consensus core set. Adverse events were documented according to a core event set.Preexisting medical conditions categorized following the American Society of Anesthesiologists physical status classification system indicated only 22% of patients with mild comorbidities (American Society of Anesthesiologists I-II), whereas severe (American Society of Anesthesiologists III-IV) comorbidities were common (78%). Indications for surgery were rotator cuff deficiency (72%), post-traumatic conditions (18%), and primary arthrosis (10%). There was significant improvement in all clinical evaluations up to 24 months post RSA: mean pain levels decreased from 6.2 to 1.6 points, where 0 indicates no pain (Despite an advanced age over 85 years and numerous associated comorbidities, our geriatric population showed a distinct clinical improvement in their daily activities with high rates of patient satisfaction. Radiographic analysis at 24 months after surgery identified adequate implant stability. RSA is a safe procedure, even in these elderly patients, with an acceptable risk of unfavorable medical and surgical events.

Acromioclavicular (AC) joint dislocations are classified according to the Rockwood (RW) classification, which is based on radiographic findings. Several authors have suggested magnetic resonance imaging (MRI) for visualization of the capsuloligamentous structures stabilizing the AC joint. The aim of this study was to describe the ligamentous injury pattern in acute AC joint dislocations by MRI and investigate associations with clinical and radiographic parameters.This prospective study included 45 consecutive patients (5 women and 40 men; mean age, 33.6 years [range, 19-65 years]) with an acute AC joint separation (RW type I in 5, RW type II in 8, RW type III in 18, and RW type V in 14). All patients underwent physical examination of both shoulders, and clinical scores (Subjective Shoulder Value, Constant score, Taft score, and Acromioclavicular Joint Instability Score) were used to evaluate the AC joint clinically as well as radiographically. Post-traumatic radiography included bilateral anteroposterior stress views and bilateral Alexander views to evaluate vertical instability and dynamic posterior translation. MRI was performed for assessment of the AC and coracoclavicular (CC) ligaments and the delto-trapezoidal fascia.Radiographic and MRI classifications were concordant in 23 of 45 patients (51%), whereas 22 injuries (49%) were misjudged; of these, 6 (13%) were reclassified to a more severe type and 16 (36%), to a less severe type. The integrity of the CC ligaments was found to have a clinical impact on vertical as well as horizontal translation determined by radiographs and on clinical parameters. Among patients with an MRI-confirmed complete disruption of the CC ligaments, 68% showed a radiographic CC difference30% and 75% showed complete dynamic posterior translation. Inferior clinical parameters were noted in these patients as compared with patients with intact CC ligaments or partial disruption of the CC ligaments (Constant score of 67 points vs. 49 points [P.05] and Acromioclavicular Joint Instability Score of 51 points vs. 23 points [P.05]). The inter-rater and intra-rater reliability for assessment of the ligamentous injury pattern by MRI was fair to substantial (r = 0.37-0.66).The integrity of the CC and AC ligaments found on MRI has an impact on clinical and radiographic parameters.

Traumatic anterior shoulder dislocation is a common injury in young and active patients and the proper treatment is still a matter of debate. The recurrence rate after conservative management remains high and, therefore, primary surgical intervention is sometimes recommended in very young patients whose risk of recurrences is highest. Immobilization in external rotation, first described by Itoi, is a promising conservative option as it provides adequate labral reduction and low recurrence rates. Recent meta-analyzes could not unequivocally demonstrate its superiority over internal rotation immobilization. However, biomechanical and early clinical results show a better effect on reduction of the labrum and lower recurrence rates for immobilization in a combination of abduction/external rotation than for external rotation alone. The present article aims to provide an overview of the conservative management of first-time traumatic shoulder dislocation in order to provide the treating physician or surgeon with the best current evidence as a basis for developing the appropriate treatment strategy for the patient.

Two-stage revision arthroplasty using cement spacers is a well-established treatment strategy for periprosthetic shoulder infection (PSI). As antibiotic-loaded cement spacers lose their efficacy to release local antibiotics over time, they can be colonized, resulting in persisting infection. This study aimed to investigate the prevalence of positive cultures in two-stage revision surgery for PSI and evaluate whether a longer period of spacer implantation is a risk factor for persistence of infection. Patients scheduled for two-stage revision surgery for PSI were enrolled in this prospective cohort study. Periprosthetic tissues samples were colected for microbiological and histopathologic analysis. Sonication analysis of the retrieved implants and spacers was performed at the first- and second-stage sugery, as well as multiplex PCR analysis of the sonication fluid of the cement spacers. Between December 2017 and December 2019, 16 patients (n = 11 female, n = 5 male; mean age 68.1 ± 7.4 years) were included. Mean interval between primary arthroplasty and revision surgery was 41 ± 21 months. PSI was identified in 12 patients (75%). Coagulase-negative staphylococci were the most common isolated pathogens in 11 patients, followed by Cutibacterium acnes in 5 patients. The mean interval between first-and second-stage surgery was 50 ± 21 (range 6–77) days. In 5 patients a more than two-stage procedure was necessary. Microbiological analysis of sonication fluid derived from the retrieved cement spacers was positive in 4 cases (33%) among infected patients, which was independent of the duration of spacer implantation. Microorganisms can be found on cement spacers in two- or more-stage revision surgeries for PSI. The interval between revision surgeries in patients with a positive microbiological result of the retrieved cement spacer was comparable to patients with a sterile cement spacer.

Anterior bone grafting is an established and frequently used treatment option for recurrent anterior shoulder instability in combination with significant glenoid bone loss. Several open and arthroscopic fixation techniques have been presented to this field in recent years. Some of these techniques are associated with different peri- and postoperative problems or complications. Therefore, the technical gold standard for anterior bone grafting has not been determined, resulting in an ongoing evolvement of bone-grafting techniques. Arthroscopic, metal-free fixation procedures were introduced to the field bone grafting to overcome previous problems of screw fixation. These metal-free techniques frequently include surgically challenging transglenoidal drilling and are placing anterior soft tissues and neurovascular structures at risk. We therefore present an arthroscopic anterior, PEEK (polyether ether ketone)-anchor based, interconnecting bone-grafting technique bypassing previous challenges to restore the anterior glenoid bone stock with adequate positioning and fixation of the bone graft.

Background The effect of patient age on functional improvement after arthroscopic rotator cuff repair (ARCR) is still a matter of debate. The purpose of this study was to evaluate the clinical midterm results after ARCR in patients who were 75 years or older at the time of surgery. Methods A total of 31 shoulders in 30 patients older than 75 years at the time of surgery underwent ARCR for a degenerative full-thickness rotator cuff tear (RCT) between 2010 and 2016. Among those, 23 shoulders in 22 patients (74%) with a mean age at time of surgery of 77 ± 2 years (range, 75-82 years) were followed up after a mean of 7 ± 2 years (range, 3-9 years). Clinical assessment included the Western Ontario Rotator Cuff (WORC) index as well as patient satisfaction, the Subjective Shoulder Value (SSV), Simple Shoulder Test (SST), and the American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form (ASES) score. Results Overall, patient satisfaction was excellent, as everybody stated to be very satisfied with the surgery. Neither any complication nor revision surgery occurred during the study period. At final follow-up, the mean WORC index was 88% ± 15%. The mean SSV was comparable between the affected shoulder (90% ± 15%) and the contralateral side (87% ± 15%) (P = .235). The mean SST score was 10 ± 2 points and the mean ASES score was 89 ± 17 points. Conclusion ARCR for symptomatic RCTs without advanced muscle degeneration in patients older than 75 years at the time of surgery provided good clinical results and high patient satisfaction at midterm follow-up.

Die inverse Endoprothetik gewinnt einen immer hoheren Stellenwert in der Versorgung von degenerativen Erkrankungen, in der Frakturversorgung, bei posttraumatischen Folgezustanden und in der Revisions- und Tumorchirurgie des Schultergelenks. Fokus dieser Ubersichtsarbeit ist die Evaluation von klinischen und radiologischen Langzeitergebnissen von inversen Schulterendoprothesen (iSTEP; Grammont-Typ, 155°). Dazu werden die funktionellen Scores, Bewegungsumfange, Komplikationen und Standzeiten im Hinblick auf die Indikation verglichen. Klinische Studien, Diskussionen von neuesten Entwicklungen und Expertenempfehlungen werden ausgewertet. Die iSTEP ist eine hervorragende Therapieoption fur irreparable Rotatorenmanschetten-Massenrupturen (RM-MR), fortgeschrittene Defektarthropathien (CTA) und primare Omarthrosen (OA) in Bezug auf Schmerzreduktion, Funktions- und Bewegungsverbesserung. Auch in der primaren Frakturversorgung, der Revisions- und Tumorchirurgie profitieren Patienten von der Therapie mittels iSTEP. Trotz einer sehr hohen Rate an skapularem Notching (SN) von bis zu 95 % in Langzeitergebnissen erreichen die Patienten meist zufriedenstellende funktionelle Ergebnisse mit einem Constant Score von ca. 60 Punkten (Maximalwert = 100 Punkte) im Durchschnitt. Obgleich ein Viertel der Patienten im Langzeitverlauf ein SN Grad 3–4 aufweisen, wird bei einer Revisionsrate von ca. 10 % eine Standzeit von 90 % nach 10 Jahren beschrieben. Auch wenn Bewegungsumfange und Kraft nach ca. 8 Jahren nachlassen, bleibt die Patientenzufriedenheit unverandert. Die besten funktionellen Ergebnisse erreichen Patienten nach RM-MR, CTA und OA, wahrend Patienten nach Revisionen und Frakturfolgezustanden schlechtere Resultate aufweisen. Die iSTEP liefert gute und zuverlassige klinische Ergebnisse in der Primarversorgung, als auch bei Revisionen. Trotz hoher Raten an SN profitieren die meisten Patienten auch im Langzeitverlauf (>10 Jahre) von der Operation.

Background The benefits of the various therapeutic options for the treatment of subacromial impingement syndrome are a topic of ongoing debate. Several studies on the subject are insufficiently evidence-based, with many other studies being considered controversial by members of the field. Nevertheless, a general opinion against surgical interventions is developing in the media in reference to these systematic reviews and meta-analyses based on insufficiently differentiated literature. Aim of the study This article provides an overview of the literature and examines the outcome after arthroscopic subacromial decompression compared with conservative therapy or diagnostic arthroscopy and bursectomy. Conclusion The outcome for patients treated with conservative therapy or subacromial decompression who explicitly suffered from mechanical outlet impingement (MOI) or mechanical non-outlet impingement (MNOI) has not yet been studied. The main problem concerning almost all published studies is that they are based on a mixture of pathologies. It seems likely that especially patients with a mechanical, and therefore structural, narrowing of the subacromial space can profit more from surgical management than patients with unspecific subacromial pain. Differentiation between the pathologies is crucial for the correct treatment decision, not only for the reduction of symptoms, but most importantly for the preservation of the supraspinatus tendon.

ZusammenfassungRupturen der distalen Bizeps- und Trizepssehne sind selten, treten jedoch gehäuft bei männlichen, sportlichen und körperlich schwer arbeitenden Patienten auf. Dieser Übersichtsartikel beschreibt Ätiologie und Pathogenese sowie Diagnostik, Behandlungsmöglichkeiten, das zu erwartende Outcome dieser Verletzungen und gibt Einblicke in das eigene Vorgehen.

Background: Arthroscopic rotator cuff repair (RCR) with suture anchor–based fixation techniques has replaced former open and mini-open approaches. Nevertheless, long-term studies are scarce, and lack of knowledge exists about whether single-row (SR) or double-row (DR) methods are superior in clinical and anatomic results. Purpose: To analyze long-term results after arthroscopic RCR in patients with symptomatic rotator cuff tears and to compare functional and radiographic outcomes between SR and DR repair techniques at least 10 years after surgery. Study Design: Cohort study; Level of evidence, 3. Methods: Between 2005 and 2006, 40 patients with a symptomatic full-thickness rotator cuff tear (supraspinatus tendon tear with or without a tear of the infraspinatus tendon) underwent arthroscopic RCR with either an SR repair with a modified Mason-Allen suture–grasping technique (n = 20) or a DR repair with a suture bridge fixation technique (n = 20). All patients were enrolled in a long-term clinical evaluation, with the Constant score (CS) as the primary outcome measure. Furthermore, an ultrasound examination was performed to assess tendon integrity and conventional radiographs to evaluate secondary glenohumeral osteoarthritis. Results: A total of 27 patients, of whom 16 were treated with an SR repair and 11 with a DR repair, were followed up after a mean ± SD period of 12 ± 1 years (range, 11-14 years). Five patients underwent revision surgery on the affected shoulder during follow-up period, which led to 22 patients being included. The overall CS remained stable at final follow-up when compared with short-term follow-up (81 ± 8 vs 83 ± 19 points; P = .600). An increasing number of full-thickness retears were found: 6 of 22 (27%) at 2 years and 9 of 20 (45%) at 12 years after surgery. While repair failure negatively affected clinical results as shown by the CS ( P < .05), no significant difference was found between the fixation techniques ( P = .456). In general, progressive osteoarthritic changes were observed, with tendon integrity as a key determinant. Conclusion: Arthroscopic RCR with either an SR or a DR fixation technique provided good clinical long-term results. Repair failure was high, with negative effects on clinical results and the progression of secondary glenohumeral osteoarthritis. While DR repair slightly enhanced tendon integrity at long-term follow-up, no clinical superiority to SR repair was found.

Purpose To investigate the clinical and radiologic mid- to long-term results of arthroscopic iliac crest bone-grafting for anatomic glenoid reconstruction in patients with recurrent anterior shoulder instability. Methods Seventeen patients were evaluated after a minimum follow-up of 5 years. Clinical [range of motion, subscapularis tests, apprehension sign, Subjective Shoulder Value (SSV), Constant Score (CS), Rowe Score (RS), Walch Duplay Score (WD), Western Ontario Shoulder Instability Index (WOSI)], and radiologic [X-ray (true a.p., Bernageau and axillary views) and computed tomography (CT)] outcome parameters were assessed. Results Fourteen patients [mean age 31.1 (range 18–50) years] were available after a follow-up period of 78.7 (range 60–110) months. The SSV averaged 87 (range 65–100) %, CS 94 (range 83–100) points, RS 89 (range 30–100) points, WD 87 (range 25–100) points, and WOSI 70 (range 47–87) %. The apprehension sign was positive in two patients (14%). One patient required an arthroscopic capsular plication due to a persisting feeling of instability, while the second patient experienced recurrent dislocations after a trauma, but refused revision surgery. CT imaging showed a significant increase of the glenoid index from preoperative 0.8 ± 0.04 (range 0.7–0.8) to 1.0 ± 0.11 (range 0.8–1.2) at the final follow-up (p Conclusion Arthroscopic reconstruction of anteroinferior glenoid defects using an autologous iliac crest bone-grafting technique yields satisfying clinical and radiologic results after a mid- to long-term follow-up period. Postoperative re-dislocation was experienced in one (7.1%) of the patients due to a trauma and an anatomic reconstruction of the pear-shaped glenoid configuration was observed. Level of evidence IV.

Background Autologous chondrocyte implantation (ACI) constitutes an established treatment option for cartilage defects of the knee joint. Experience in the shoulder, however, is limited, and the management of cartilage defects remains a challenge. The purpose of this study was to evaluate the results after ACI with 3-dimensional spheroids of human autologous matrix-associated chondrocytes in the shoulder. Methods Seven male patients (median age, 42.8 years [range, 18-55 years]) underwent ACI for symptomatic focal grade IV cartilage lesions of the humeral head by an open or arthroscopic approach. Clinical parameters (range of motion, visual analog scale score, Subjective Shoulder Value, Constant score, and American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form score) and osteoarthritis grades were assessed. Arthroscopic re-evaluation was additionally performed in 5 patients. Results After a median follow-up period of 32 months (range, 22-58 months), the median Subjective Shoulder Value was 95% (range, 70%-100%) compared with 60% (range, 30%-60%) preoperatively, the visual analog scale score was 0 at rest and was a median of 0 (range, 0-2) during exercise, the median Constant score was 95 points (range, 80-100 points), and the median American Shoulder and Elbow Surgeons score was 97 points (range, 90-100 points). The median preoperative size of the cartilage lesion was 3 cm2 (range, 2.3-4.5 cm2). Arthroscopically, complete coverage of the cartilage defect was observed in 4 cases whereas a circumferential residual defect of 0.25 cm2 was found in 1 patient. Grade I osteoarthritis (Samilson and Prieto classification) was observed in 2 cases. One patient had postoperative adhesive capsulitis and required revision surgery. Conclusion ACI using 3-dimensional spheroids of human autologous matrix-associated chondrocytes for treatment of grade IV articular cartilage lesions of the humeral head achieves satisfactory clinical results during a short- to mid-term follow-up period and leads to successful defect coverage with only minor radiologic degenerative changes. In this case series, ACI proved to constitute a viable treatment in the shoulder joint. However, in consideration of the 2-stage surgical design and the cost intensiveness of this procedure, the indication is restricted to young and active symptomatic patients in our practice.

Pathologic activation pattern of muscles can cause shoulder instability. We propose to call this pathology functional shoulder instability (FSI). The purpose of this prospective study was to provide an in-detail description of the characteristics of FSI.In the year 2017, a total of 36 consecutive cases of FSI presenting to our outpatient clinic were prospectively collected. Diagnostic investigation included a pathology-specific questionnaire, standardized clinical scores, clinical examination, psychological evaluation, video and dynamic fluoroscopy documentation of the instability mechanism, as well as magnetic resonance imaging (MRI). In a final reviewing process, the material from all collected cases was evaluated and, according to the observed pattern, different subtypes of FSI were determined and compared.Based on the pathomechanism, positional FSI (78%) was distinguished from nonpositional FSI (22%). Controllable positional FSI was observed in 6% of all cases and noncontrollable positional FSI in 72%, whereas controllable and noncontrollable nonpositional FSI were each detected in 11% of the cases. The different subtypes of FSI showed significant differences in all clinical scores (Western Ontario Shoulder Instability Index: P = .002, Rowe Score: P = .001, Subjective Shoulder Value: P = .001) and regarding functional impairment (shoulder stability: P.001, daily activities: P = .001, sports activities: P.001). Seventy-eight percent had posterior, 17% anterior, and 6% multidirectional instability. Although several patients showed constitutional glenoid shape alterations or soft tissue hyperlaxity, only few patients with acquired minor structural defects were observed.FSI can be classified into 4 subtypes based on pathomechanism and volitional control. Depending on the subtype, patients show different degrees of functional impairment. The majority of patients suffer from unidirectional posterior FSI.

Glenohumeral osteoarthrosis (OA) may develop after primary, recurrent shoulder dislocation or instability surgery. The incidence is reported from 12 to 62%, depending on different risk factors. The risk of severe OA of the shoulder following dislocation is 10 to 20 times greater than the average population. Risk factors include the patient’s age at the first episode of instability or instability surgery, bony lesions, and rotator cuff tears. For mild stages of OA, arthroscopic removal of intraarticular material, arthroscopic debridement, or arthroscopic arthrolysis of an internal rotation contracture might be sufficient. For severe stages, mobilization of the internal rotation contracture and arthroplasty is indicated. With an intact rotator cuff and without a bone graft, results for anatomical shoulder arthroplasty are comparable to those following primary OA. With a bone graft at the glenoidal side, the risk for implant loosening is ten times greater. For the functional outcome, the quality of the rotator cuff is more predictive than the type of the previous surgery or the preoperative external rotation contracture. Reverse shoulder arthroplasty could be justified due to the higher rate of complications and revisions of non-constrained anatomic shoulder arthroplasties reported. Satisfactory clinical and radiological results have been published with mid to long term data now available.

The subacromial bursa has long been demolded as friction-reducing tissue, which is often linked to shoulder pain and, therefore, partially removed during shoulder surgery. Currently, the discovery of the stem cell potential of resident bursa-derived cells shed a new light on the subacromial bursa. In the meanwhile, this neglected tissue is gaining more attention as to how it can augment the regenerative properties of adjacent tissues such as rotator cuff tendons. Specifically, the tight fibrovascular network, a high growth factor content, and the large progenitor potential of bursa-derived cells could complement the deficits that a nearby rotator cuff injury might experience due to the fact of its low endogenous regeneration potential. This review deals with the question of whether bursal inflammation is only a pain generator or could also be an initiator of healing. Furthermore, several experimental models highlight potential therapeutic targets to overcome bursal inflammation and, thus, pain. More evidence is needed to fully elucidate a direct interplay between subacromial bursa and rotator cuff tendons. Increasing attention to tendon repair will help to guide future research and answer open questions such that novel treatment strategies could harvest the subacromial bursa's potential to support healing of nearby rotator cuff injuries.

Most of the surgeries regarding the shoulder were established over a century ago [...]

Introduction The “Glenohumeral Internal Rotation Deficit (GIRD)” is known as the difference in internal rotation range of motion (IRRM) between the dominant and non-dominant shoulder of overhead athletes as a result of asymmetric loading. As in contrast loading pattern in gymnastics are quite symmetric and structural changes often occur bilaterally, the question arises if GIRD might develop bilaterally in gymnasts as one source of common bilateral shoulder pathologies and to search for underlying structural adaptations. Materials and methods A group of 35 elite gymnasts (8–24 years) were recruited from a local Olympic Training Centre and compared to a paired cohort of 28 non-overhead athletes. Clinical examinations, digital range of motion (ROM)-measurement, ultrasonographic humeral torsion measurement, and standardized MRI scans of both shoulders were obtained and examined for structural pathologies, cross-sectional areas (CSA) of the rotator cuff muscles and capsular thickness. Results ROM-measurements showed significant decrease in IRRM in the gymnasts groups by age, with IRRM of 48.6° (SD: 8.4°, CI 95%: 43.0–54.3°) at age group 1 (8–10 years) and IRRM of 10° (SD: 11.4°; CI 95%: 0–22.0°) at age group 4 (18–26 years), that was statistically significant for the entire cohort (p = 0.017) compared to the controls. CSA were not significantly different between the cohorts, while there was a slightly increased humeral retrotorsion in the gymnasts as well as a statistically significant posterior capsular thickening. Conclusion A new bilateral form of GIRD was identified in higher age groups of youth and senior elite gymnasts enrolled in this study. Despite to former definition of GIRD there was no compensatory increase in external rotation range of motion (ERRM) but an association with posterior capsular thickening, while there was no periscapular muscle hypertrophy. Humeral retrotorsion was also slightly increased in the gymnasts group.

Case We present the case of a symptomatic os acromiale in a 51-year-old female patient. Arthroscopy-assisted treatment was performed using a double-button fixation system and additional suture cerclage. The patient presented with complete radiographic bone union, pain relief, improved range of motion and did not require hardware removal at the 12-month follow-up. Conclusion The achievement of persistent consolidation between the two fragmented bone surfaces, without further need for hardware removal and improved clinical outcome, suggests that our minimally invasive technique is appropriate for this specific indication. To our knowledge, this technique has not been described in the literature yet.

Die Anzahl an schulterchirurgischen Operationen ist in den letzten Jahren deutlich gestiegen. Mit zunehmenden diagnostischen Moglichkeiten, chronische periprothetische Infektionen zu detektieren, ist die Inzidenz der Cutibacterium-Infektion (fruher Proprionibacterium) in der Schulterchirurgie gestiegen. Diese Arbeit beschaftigt sich mit Diagnostik, Inzidenz und therapeutischer Konsequenz der Cutibacterium-Infektion in der Schulterchirurgie mit dem Ziel, langwierige und kostentrachtige Krankheitsverlaufe nach schulterchirurgischen Eingriffen zu vermeiden. Verschiedene Studien identifizierten Cutibacterium als den haufigsten pathogenen Keim bei periprothetischen Schulterinfektionen. Jedoch sollte bedacht werden, dass der Nachweis des Cutibacterium im Schulterbereich auch ohne klinische Zeichen einer Infektion vorliegen kann und nicht immer eine sofortige therapeutische Konsequenz gezogen werden muss. Die aktuellen Richtlinien zur Therapie beinhalten eine Implantatentfernung sowie eine antimikrobielle Therapie fur 12 Wochen. Es sollte ein groseres Bewusstsein uber die Inzidenz von Cutibacterium-Infektionen in der Schulterchirurgie herrschen. Die Evidenz der aktuellen Therapieempfehlung sollte durch weitere prospektive, randomisierte, kontrollierte Studien gepruft werden.

Background It is unknown whether subscapularis management technique has an influence on the outcomes and complications of stemless total shoulder arthroplasty. The purpose of this study, therefore, was to compare outcomes and complications between subscapularis tenotomy, peel, and lesser tuberosity osteotomy used during stemless shoulder arthroplasty. Methods We reviewed 188 stemless anatomic total shoulder arthroplasties and compared clinical and functional outcomes between those performed through a subscapularis tenotomy (n = 68), subscapularis peel (n = 65), or lesser tuberosity osteotomy (n = 55). Patients were followed up clinically and radiographically at 6 months, 1 year, and 2 years postoperatively. Results At 2 years postoperatively, no statistically significant differences in visual analog scale pain scores, American Shoulder and Elbow Surgeons scores, or patient-reported instability (P ≥ .19) were found between groups. Active external rotation was greater in the peel group (P = .006) than in the tenotomy group but was not different compared with the lesser tuberosity osteotomy group (P = .07). No statistically significant difference in clinical subscapularis failures was noted between groups (P = .11); however, 2 patients in the peel group sustained a subscapularis failure requiring reoperation. Discussion The results of this multicenter comparative analysis show that all 3 subscapularis management techniques are effective and safe in the short term when used with stemless anatomic total shoulder arthroplasty.

The coracoid transfer represents a treatment option for patients with recurrent shoulder instability. Only a few studies exist about the complication rate of the coracoid transfer as a revision surgery following failed soft tissue stabilization. The purpose of this study was to analyze the results and complication rate after coracoid transfer as a revision surgery.In this study 38 patients (4 females, 34 males, mean age 27 years) were included of whom 29 patients were available for follow-up after a mean of 27 months. Previous shoulder stabilization procedures were predominantly arthroscopic (n = 25). Complications were divided according to their timely appearance into early ( 3 months) and late ( 3 months) postoperatively as well as need for revision. Clinical scores [Constant Score (CS), Rowe Score (RS), Walch-Duplay-Score (WDS), WOSI and Subjective-Shoulder-Value (SSV)] were evaluated preoperatively and at final follow-up.In this patient cohort, the overall complication rate was 27.6%, all of them occurred 3 months postoperatively. In seven of eight cases (24.1%) a repeat surgical procedure was conducted. Recurrent instability occurred in three patients (10.3%) of which two received a revision surgery (n = 1 iliac-crest bone graft, n = 1 labral repair). Due to persistent pain five patients underwent an arthroscopic implant removal. The complication rate was with 40% higher in patients with two or more previous surgeries (n = 4 out of 10 patients) compared to patients with one previous surgery (21%, n = 4 out of 19 patients). The scores increased significantly comparing pre- to postoperative [CS 74-90 points, RS 27-91 points, WDS 16-89 points, WOSI 40-76% and SSV 41-82% (p 0.05)].The open coracoid transfer as a revision surgery after failed soft tissue stabilization leads to satisfying clinical results. However, the complication rate is high though comparable to data in the literature when used as a primary surgery. The indication for a coracoid transfer should be judged carefully and possible alternatives should be considered.

Head-split fractures account for less than 5% of proximal humerus fractures and occur when the humeral head cleaves as it impacts against the narrow “anvil” of the glenoid into two or more large fragments, generally associated with fractures of the tuberosities or surgical neck. The articular surface is fragmented into disconnected pieces, frequently these fractures often very challenging and demanding in terms of initial diagnosis and treatment options. They often need surgical intervention because of their articular fracture pattern and their high risk of malunion with the development of premature glenohumeral arthritis. Moreover, head-split fractures are often misdiagnosed on initial plain radiographs, which can delay and complicate appropriate treatment. The purpose of this article is to provide an overview of the diagnosis, classification, and treatment of head-split fractures.

Reverse shoulder arthroplasty (RSA) shows a growing number of implantations and is a valuable option to improve shoulder function and decrease pain. However, there is no consensus concerning the rehabilitation protocol following surgery. To review and evaluate current rehabilitation contents and protocols after RSA by reviewing the existing scientific literature and providing an overview of the clinical practice of selected German Society of Shoulder and Elbow Surgery (Deutsche Vereinigung fur Schulter- und Ellenbogenchirurgie e. V., DVSE) shoulder experts. A literature search for the years 1989–2016 was conducted in relevant databases and bibliographies including the Guidelines International Network, National Guidelines, PubMed, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews and the Physiotherapy Evidence Database. In addition, 63 DVSE experts were contacted via an online questionnaire. Since no level I/II studies on postoperative protocols after RSA were found, the 856 hits were searched by the committee members and sorted according to the topics “rehabilitation”, “complications”, “clinical outcome studies”, “basic science”, “reviews” and “miscellaneous”. Additionally, survey results were analyzed and compared to the literature. The comparison between literature recommendation and expert survey showed agreement according principal aspects (e.g. brace/sling, immobilization, passive exercises). Based on the literature and the expert opinions obtained, a four-phase rehabilitation protocol could be developed.