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Background: Literature describing outcomes and integrity after isolated subscapularis (SSC) tendon repair is emerging but remains limited to a few small case series with short-term follow-up. The aim of this study was to evaluate the long-term clinical outcomes and repair integrity in patients who underwent arthroscopic repair of isolated SSC tears., Methods: A retrospective study was conducted with the following inclusion criteria: (1) primary and elective shoulder arthroscopy for isolated SSC repair, (2) type III (a full-thickness tear in the upper two-thirds of the tendon) or IV (a complete tear without tendon retraction) SSC tear according to the Lafosse classification, and (3) a minimum 24-month follow-up. Preoperatively, the range of motion (ROM) and the Constant-Murley score (CMS) and at follow-up, the ROM, the University of California-Los Angeles (UCLA) Shoulder Rating Scale, the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire, and the CMS were evaluated; an ultrasonographic assessment of tendon healing was performed according to the Sugaya classification., Results: The final sample consisted of 45 patients with an average age of 55 ± 9 years. After a mean follow-up time of 107 ± 54 months, the mean UCLA and DASH scores were 8.7 ± 1.3 and 42.2 ± 6.4, respectively. ROM and CMS showed statistically significant improvements (all P < .001). Before surgery, the mean CMS was 49% that of sex- and age-matched healthy individuals, and all patients showed a CMS lower than the normative data. At the final follow-up visit, the mean CMS was 94.2% that of sex- and age-matched healthy individuals, and no patients showed CMS of 30 or less. The mean increase in the CMS was 41.4 ± 9.8 points (range, 23-60 points). The ultrasonographic assessment showed SSC tendon healing in 39 (86.7%) cases; tendon retear was recorded in 5 (13.3%) cases. All scores directly correlated with the healing of the tendon. A higher postoperative DASH score was associated with male sex (P = .039, β = 5.538) and a longer follow-up period (P = .044, β = 0.001). The postoperative CMS (P < .001) and UCLA scores (P = .001) were significantly higher in patients younger than 60 years of age at surgery than in older individuals., Conclusion: Arthroscopic repair of isolated SSC tears achieves excellent clinical and functional results at a mean of 9 years postoperatively, with a satisfactory healing rate. Better functional outcomes correlate with SSC tendon integrity and were observed in male patients and in those younger than 60 years at surgery., (Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.)

Background: Several techniques have been adopted during primary reverse shoulder arthroplasty (RSA) to manage glenoid bone defect. Among bone grafts, humeral head autograft is currently the mainstream option. However, autologous humeral heads may be unavailable or inadequate, and allografts may be a viable alternative. The aim of the present study was to evaluate the functional and radiologic outcomes of femoral head allografts for glenoid bone defects in primary RSA., Methods: We conducted a retrospective study with prospective data collection enrolling 20 consecutive patients who underwent RSA with femoral head allografts for glenoid bone defects. Indications for surgery were eccentric cuff tear arthropathy in 10 cases (50%), concentric osteoarthritis in 9 cases (45%), and fracture sequelae in 1 case (5%). Each patient was evaluated preoperatively and at follow-up by radiologic and computed tomography (CT) and by assessing the range of motion (ROM) and the Constant-Murley score (CMS). A CT-based software, a patient-specific 3D model of the scapula, and patient-specific instrumentation were used to shape the graft and to assess the position of K-wire for the central peg. Postoperatively, CT scans were used to identify graft incorporation and resorption., Results: After a median follow-up of 26.5 months (24-38), ROM and CMS showed a statistically significant improvement (all P = .001). The median measures of the graft were as follows: 28 mm (28-29) for diameter, 22° (10°-31°) for angle, 4 mm (2-8 mm) for minimum thickness, and 15 mm (11-21 mm) for maximum thickness. Before the surgery, the median glenoid version was 21.8° (16.5°-33.5°) for the retroverted glenoids and -13.5° (-23° to -12°) for the anteverted glenoids. At the follow-up, the median postoperative baseplate retroversion was 5.7° (2.2°-1.5°) (P = .001), and this value was close to the 4° retroversion planned on the preoperative CT-based software. Postoperative major complications were noted in 4 patients: 2 dislocations, 1 baseplate failure following a high-energy trauma, and 1 septic baseplate failure. Partial graft resorption without glenoid component failure was observed in 3 cases that did not require revision surgery., Conclusion: The femoral head allograft for glenoid bone loss in primary RSA restores shoulder function, with CMS values comparable to those of sex- and age-matched healthy individuals. A high rate of incorporation of the graft and satisfactory correction of the glenoid version can be expected after surgery. The management of glenoid bone defects remains a challenging procedure, and a 15% risk of major complication must be considered., (Copyright © 2023 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Purpose: Shoulder stiffness (SS) is a condition characterised by active and passive restricted glenohumeral range of motion, which can occur spontaneously in an idiopathic manner or be associated with a known underlying aetiology. Several treatment options are available and currently no consensus has been obtained on which treatment algorithm represents the best choice for the patient. Herein we present the results of a national consensus on the treatment of primary SS., Methods: The project followed the modified Delphi consensus process, involving a steering, a rating and a peer-review group. Sixteen questions were generated and subsequently answered by the steering group after a thorough literature search. A rating group composed by professionals specialised in the diagnosis and treatment of shoulder pathologies rated the question-answer sets according to the scientific evidence and their clinical experience., Results: Recommendations were rated with an average of 8.4 points out of maximum 9 points. None of the 16 answers received a rating of less than 8 and all the answers were considered as appropriate. The majority of responses were assessed as Grade A, signifying a substantial availability of scientific evidence to guide treatment and support recommendations encompassing diagnostics, physiotherapy, electrophysical agents, oral and injective medical therapies, as well as surgical interventions for primary SS., Conclusions: A consensus regarding the conservative and surgical treatment of primary SS could be achieved at a national level. This consensus sets basis for evidence-based clinical practice in the management of primary SS and can serve as a model for similar initiatives and adaptable guidelines in other European countries and potentially on a global scale., Level of Evidence: Level I., (© 2024 The Authors. Knee Surgery, Sports Traumatology, Arthroscopy published by John Wiley & Sons Ltd on behalf of European Society of Sports Traumatology, Knee Surgery and Arthroscopy.)

Background: Although interest in studies evaluating the outcomes of rotator cuff repair is steadily increasing, the results and tendon integrity after arthroscopic rotator cuff repair in elderly patients have only been minimally investigated. The aim of this study was to evaluate clinical outcomes and repair integrity in patients over 65 years of age who underwent arthroscopic repair of full-thickness rotator cuff tears., Methods: A retrospective study was conducted with the following inclusion criteria: (1) elective shoulder arthroscopy for rotator cuff repair for full-thickness posterosuperior tears; (2) age over 65 years at surgery; and (3) participation in 24 months of follow-up. Preoperatively, the range of motion (ROM) and the Constant-Murley Score (CMS) and at follow-up, the ROM, the 12-Item Short Form Survey, the American Shoulder and Elbow Surgeons, and the CMS were evaluated; an ultrasonographic assessment of tendon integrity was performed according to the adapted Sugaya classification., Results: The final sample consisted of 110 patients with an average age of 69.2 ± 3.5 years. The mean duration of nonoperative management before surgery was 2.6 ± 0.8 months. The mean period of preoperative physical therapy was 0.6 ± 0.9 months. ROM and CMS showed statistically significant improvement (all P  < .001) after a mean follow-up time of 54.5 ± 22.3 months. The ultrasonographic assessment showed tendon integrity (types I and II) in 75% of cases; 21% were type III repair, and rotator cuff retear (types IV and V) was recorded in 4% of cases. All scores directly correlated with the integrity of the tendon. In the multivariate analysis, higher postoperative CMS was associated with male sex ( P  < .001, β = -6.085) and lower age ( P  = .004, β = -0.533). Higher postoperative American Shoulder and Elbow Surgeons were associated with lower age ( P  = .020, β = -0.414). Higher postoperative 12-Item Short Form Survey physical component score and mental component score were associated with lower age ( P  = .013, β = -0.550 and P  < .001, β = -0.520, respectively) and shorter preoperative physical therapy period ( P  = .013, β = -2.075 and P  = .006, β = -1.093, respectively)., Conclusion: A significant ROM and CMS recovery and a rotator cuff integrity rate of 75% can be expected in patients over 65 years of age who undergo arthroscopic repair for full-thickness rotator cuff tears. Better functional, physical, and mental health outcomes correlate with rotator cuff integrity and are predicted by male sex and a shorter period of preoperative physical therapy., (© 2023 The Author(s).)

Background: The medium-term results of reverse shoulder arthroplasty (RSA) that has been performed by a single surgeon have been previously reported. The purpose of this study was to investigate the minimum 10-year clinical and radiographic outcomes of these patients., Methods: In this prospective cohort study, 27 patients were evaluated after RSA for massive rotator cuff tear with or without eccentric osteoarthritis (OA) or concentric OA with the Constant-Murley Score (CMS), range of motion (ROM), and a radiologic assessment., Results: At a mean 12-year follow-up, the CMS and ROM were significantly improved when compared with the baseline values (all P  < .001). Once stratified by diagnosis, no difference in the ROM or total CMS was found between patients with massive rotator cuff tear with/without eccentric OA and those with concentric OA. Neither ROM nor CMS decreased when compared to the mid-term values of the previous study, for both the overall population and the diagnosis-stratified groups. Scapular notching was reported in 66.7% of cases that was similar to the data reported at mid-term follow-up. The calcification rate was 59.3% at the long-term evaluation, and there were no differences between the same case-series population (51.9%; P  = .785) and the whole population at mid-term follow-up (47%; P  = .358)., Conclusion: RSA led to excellent clinical and functional outcomes for patients up to 17 years postoperatively, and there was no decrease in the CMS over time. No loosening of implants was noted, and the rate of scapular notching was 66%, mostly grade 1 or 2., (© 2023 The Author(s).)

Purpose: No therapeutic intervention is universally accepted for frozen shoulder, and the most effective management to restore motion and diminish pain has yet to be defined. The aim of this study was to investigate functional and psychological outcomes in patients who underwent arthroscopic capsular release for a frozen shoulder., Methods: A retrospective study with prospective data collection was conducted with 78 patients suffering from frozen shoulder resistance to conservative treatment. Considering the etiology, there were 36 (46.2%) idiopathic, 31 (39.7%) postoperative, and 11 (14.1%) posttraumatic cases. Preoperatively, each patient was evaluated with the range of motion (ROM) assessment and the Constant-Murley score (CMS). At follow-up, the 4-point subjective satisfaction scale (SSS), the ROM assessment, the SF-12 questionnaire, the numerical rating scale (NRS) for the subjective assessment of pain, the CMS and the Hospital Anxiety and Depression Scale (HADS) were assessed., Results: After a mean follow-up of 54.2 ± 22.3 months, ROM and CMS showed a statistically significant improvement between pre- and postoperative values (all p < 0.001). Before surgery, the mean CMS was 36.9% that of sex- and age-matched healthy individuals, and all patients showed a CMS lower than the normative data. At the final follow-up visit, the mean CMS was 99.9% that of sex- and age-matched healthy individuals, and 49 (62.8%) patients showed a CMS equal to or higher than the normative data. The mean increase in the CMS was 56.1 ± 8.3 points. The mean SSS, HADS-A, HADS-D, and NRS were 3.7 ± 0.5, 2.5 ± 1.6, 2.2 ± 1.3, and 2.2 ± 1.0, respectively. All patients returned to their previous level of work and sports activity after 2 and 2.5 months, respectively. The multivariate analysis showed the association between a higher postoperative CMS and the idiopathic etiology of a frozen shoulder (p = 0.004, β = 3.971). No intraoperative complications occurred. Postoperatively, four patients (5.1%) were treated with intra-articular steroid injections to manage residual symptoms. One patient (1.3%) with a postoperative frozen shoulder showed persistent symptoms and underwent a new successful arthroscopic capsular release., Conclusion: High patient satisfaction and statistically significant ROM and CMS recovery can be achieved after arthroscopic capsular release to manage frozen shoulder. Better functional outcomes are expected when the etiology is idiopathic. Results can help surgeons identify the patients who will most benefit from surgery and should be discussed with the patient., Level of Evidence: III., (© 2023. The Author(s).)

Purpose: To develop a consensus on diagnosis and treatment of rotator cuff tears. The study focused on selected areas: imaging, prognostic factors, treatment options, surgical techniques., Methods: Panel was composed of all members of the shoulder committee of the Italian Society of Arthroscopy, Knee, Upper arm, Sport, Cartilage and Orthopedic techniques (SIAGASCOT). Four rounds were performed. The first round consisted of gathering questions which were then divided into seven blocks referring to: imaging, patient-related prognostic factors, treatment options, surgical steps, reparative techniques, surgical predictive factors, advanced techniques. Subsequent rounds consisted of condensation by means of online questionnaire and debates. Consensus was defined as two-thirds agreement on one answer. Descriptive statistic was used to summarize the data., Results: Forty-one shoulder experts were involved. Fifty-six statements were finally formulated. A consensus could be achieved on 51. Experts agreed that preoperative magnetic resonance imaging is strongly recommended because it allows a careful evaluation of tear characteristics, while the role of US remains debatable. Controversial patient-related factors such as age, comorbidities, smoking and stiffness do not contraindicate the repair. From a surgical standpoint, the experts highlighted that pseudo-paralysis is not a contraindication to rotator cuff repair. Consensus on specific surgical steps was also achieved: capsular release should be performed only in stiff shoulders; footprint preparation is mandatory, while debridement of tendon edges is not essential. If necessary, a rotator interval release could be performed without interrupting the continuity between subscapularis and supraspinatus tendon; posterior delamination should be always included in the repair. Advanced techniques such as tendon transfers should be selected based on the main clinical deficit, while the superior capsule reconstruction plays a role only in combination with a functional repair., Conclusion: A consensus was achieved almost on every topic of controversy explored. Particularly, MRI was deemed necessary to determine tear characteristics, while radiographs remain important for differential diagnosis; age should not be considered a contraindication to surgery; pseudo-paralysis does not represent a contraindication to arthroscopic rotator cuff repair, but superior capsule reconstruction plays a role only in combination with a functional repair. Latissimus dorsi transfer plays a role when the main functional deficit is in elevation, while the lower trapezius transfer plays a role when the main functional deficit is the external-rotation., Level of Evidence: V., (© 2023. The Author(s) under exclusive licence to European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA).)

Background: The aim of the present study was to compare the clinical outcomes of 4 surgical techniques in patients with recurrent anterior shoulder dislocation, glenoid bone loss (GBL) <15% and Instability Severity Index (ISI) score >3., Methods: A retrospective multicenter study was conducted on 226 patients who underwent 1 of 4 different techniques (Bankart plus arthroscopic subscapularis augmentation (ASA), Bankart plus remplissage, Latarjet, Arthro-Latarjet). The inclusion criteria were: recurrent dislocation, GBL <15%, and ISI score >3. The exclusion criteria were: GBL >15%, voluntary instability, multidirectional instability, preexisting osteoarthritis, throwing athletes' first dislocation, and ISI score<3. Follow-up ranged from 24 months to 6 years. Hyperlaxity was clinically evaluated according to Neer and Coudane-Walch tests. Clinical outcomes were assessed using the Rowe score and the Western Ontario Shoulder Instability Index (WOSI) for each technique. Before surgery, all patients underwent magnetic resonance imaging and computed tomography scanning. The Pico area method was used to assess the percentage of GBL. The operations were performed by 10 experienced surgeons; the functional outcomes were evaluated by 2 independent observers., Results: A total of 226 patients who met the inclusion criteria were included in the present series. A total of 89.2% of patients in the ASA group reported an excellent Rowe score at the final follow-up, and their scores on the WOSI scale, improved from 838 to 235 points. A total of 79.9% of patients in remplissage (R) group reported an excellent Rowe score at the final follow-up, and their scores on the WOSI scale improved from 1146 to 465 points. A total of 98.5% of patients in the Latarjet (L) group reported an excellent Rowe score at the final follow-up, and their scores on the WOSI scale improved from 1456 to 319 points. A total of 81.6% of patients in the Arthro-Latarjet (AL) group reported an excellent Rowe score at the final follow-up, and their scores on the WOSI scale improved from 1250 to 221 points. The recurrence rates were as follows: ASA group (7%), remplissage group (6.1%), L group (1.5%), Arthro-Latarjet group (0%). Patients in the open L group had 15.5% (10/66) more complications., Conclusion: The use of ASA and remplissage to augment the Bankart repair have been demonstrated to be effective for restoring joint stability, yielding good clinical outcomes similar to the L procedure in patients affected by recurrent anterior dislocation with GBL <15% and an ISI score score >3. Soft tissues augmentations of the Bankart repair have been demonstrated to be effective for addressing anterior soft tissue deficiency dysfunction and critical Hill-Sachs lesions., (Copyright © 2022 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Massive, irreparable rotator cuff tears, if left untreated, may result in cuff tear arthropathy, which causes shoulder disability and pain. The primary outcome of this systematic review was to evaluate differences in functional outcomes between the arthroscopic superior capsular reconstruction (SCR) and latissimus dorsi tendon transfer (LDTT) for the treatment of massive, irreparable posterosuperior rotator cuff tears without arthritis. The secondary outcome was to compare complication and reoperation rates between the 2 surgical procedures., Methods: The PubMed, MEDLINE, Scopus, and Cochrane Central databases were searched using keywords, and 20 studies were included in this review. Data extracted for quantitative analysis included the American Shoulder and Elbow Surgeons score, the Constant-Murley score, the subjective shoulder value, the range of motion, the visual analog scale for pain, numbers and types of complications, and reoperation rate. The preoperative fatty degeneration of the muscles and the preoperative and follow-up acromiohumeral distance and glenohumeral osteoarthritis according to the Hamada grading system were also reported., Results: A total of 1112 patients were identified, among whom 407 and 399 underwent SCR and LDTT, respectively. The SCR group showed a higher mean age at the time of operation (64.5 ± 7.8 vs. 62.1 ± 8.9 years; P < .001). The SCR group showed a lower rate of previous surgical procedures on the shoulder (35 out of 407 vs. 111 out of 399; P < .001) and a shorter mean follow-up (30.4 ± 7.5 vs. 36.3 ± 10.3 months; P < .001). Patients who underwent SCR reported significantly better functionality and residual pain as measured by the Constant-Murley score (75.5 ± 11.2 vs. 65.6 ± 22.8, P < .001), the American Shoulder and Elbow Surgeons score (84.3 ± 13 vs. 67.7 ± 23, P < .001), the subjective shoulder value (79.4 ± 13 vs. 64.4 ± 23, P < .001), and the visual analog scale (1.4 ± 2 vs. 2.8 ± 3, P < .001) than patients who underwent LDTT. A greater acromiohumeral distance (5.8 ± 2.5 vs. 7.6 ± 2.7, P < .001) was found in the SCR group. The SCR group showed a significantly lower infection rate (0.2% vs. 2.8%., P = .003) and a higher graft failure rate (12.3% vs. 6.8%, P = .012). No differences in terms of reoperation for graft failure (1% vs. 2.3% for SCR and LDTT, respectively; P = .172) or for conversion to reverse total shoulder arthroplasty (1.7% vs. 2% for SCR and LDTT, respectively; P = .800) were found., Conclusion: Patients undergoing SCR report better functional outcomes and greater acromiohumeral distance than those undergoing LDTT. The LDTT group shows a significantly higher infection rate, while the SCR group shows a significantly higher graft failure rate, but there are no differences in terms of reoperation between the 2 surgical procedures., (Copyright © 2022 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Purpose: To retrospectively evaluate clinical and radiologic outcomes and return to sport and to work of patients after arthroscopic Latarjet stabilization for primary instability or revision surgery; factors influencing and determining results and potential predictors for clinical outcomes also were evaluated., Methods: This is a retrospective study including patients older than 18 years old who underwent arthroscopic Latarjet stabilization for recurrent anterior glenohumeral instability with off-track lesions, or for cases of recurrence after previous surgery, from 2011 to 2017. Patients were assessed preoperatively and at a minimum 3 years of follow-up using the Rowe score, the University of California at Los Angeles Shoulder Score and Simple Shoulder Test score; the range of motion, satisfaction rate, return to work and sport, perception of discomfort during sporting and daily activities, and complications and recurrence after surgery were also evaluated. The integration of the coracoid graft and the position of the screws were examined by computed tomography scan., Results: At a mean follow-up time of 6 ± 2 years, 93 patients (95 shoulders) showed significant improvement of all scale scores (P < .001), 97.8% of the patients had returned to the same working condition as before surgery, and all the patients who practiced sports preoperatively (85; 91.4%) returned to sport after surgery; 97.9% of patients were satisfied with surgery. The complication rate was 5.4%, and 2 cases (2.1%) of recurrence occurred, both after high-energy trauma. At an average of 17 ± 13 months postoperatively, computed tomography scans showed 4 (6.6%) stable nonunions, 9 (14.8%) superior, and 1 (1.6%) inferior lyses of the graft; a correct positioning of the graft was observed in 86.9% of the cases. Greater satisfaction, fewer complications, less pain during daily activities, and a lower number of reoperations were associated with a shorter time between the first dislocation episode and surgery (P = .019, P < .001, P = .014, and P = .005, respectively). Complications were directly associated with older patient age at operation (P = .001). A greater number of nonunions was found in patients with increased angle between the line linking the posterior and anterior glenoid rim and the screw axis (P = .040) and a medial axial position or a lower coronal position of the graft (both P = .010). A lower age at the time of surgery predicted better Rowe scores at follow-up (P < .001), and a lower age at the time of the first episode of dislocation predicted better postoperative Simple Shoulder Test scores (P = .026)., Conclusions: At a mean 6-year follow-up time, excellent clinical outcomes, and radiological results, with few complications, high rates of satisfaction and return to work and sport and low sports anxiety can be expected after arthroscopic Latarjet procedure. A shorter time between the first dislocation episode and surgery was associated with higher satisfaction, fewer complications, less pain during daily activities and lower reoperations; a lower age at the operation was associated with lower complications., (Copyright © 2022 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Purpose: The purpose of this study was to demonstrate that arthroscopic Bankart repair with associated arthroscopic subscapularis augmentation (ASA) could be a valid surgical option in the treatment of anterior shoulder instability, in collision and contact sports athletes, affected by shoulder hyperlaxity., Methods: In total, 591 arthroscopic Bankart repairs plus ASA were performed in 6 shoulder centers from 2009 to 2017. Inclusion criteria were the following: collision and contact sports activities, recurrent anterior instability associated with hyperlaxity and glenoid bone loss (GBL) < 15%. Exclusion criteria were GBL > 15%, voluntary instability, multidirectional instability, pre-existing osteoarthritis and throwing athletes. The minimum follow-up was 24 months. Hyperlaxity was clinically evaluated according to Neer and Coudane-Walch tests. Before surgery, all patients underwent magnetic resonance imaging and computed tomography scanning. Pico area method was used to assess the percentage of GBL. Patients were operated on by 6 surgeons, and their functional outcomes were evaluated by 2 independent observers. The Western Ontario Shoulder Instability Index (WOSI), Rowe, American Shoulder and Elbow Surgeons (ASES) scores were used to assess results., Results: Overall, 397 patients with evidence of shoulder hyperlaxity (positive sulcus sign in ER1 position and Coudane-Walch test > 85°) met all inclusion criteria. The mean WOSI score was 321; the mean Rowe score rose from 68.5 to 92.5 (P = .037), and the ASES score rose from 71.5 to 97.4 (P = .041). Seven patients (1.6%) had atraumatic redislocation, and 9 patients (2.2%) had post-traumatic redislocation. At final follow-up the mean functional deficit of external rotation was 15° with the arm in adduction (ER1 position) and 10° in abduction (ER2 position)., Conclusions: The Bankart repair plus ASA has been demonstrated to be safe and effective for restoring joint stability in patients practicing collision and contact sports or affected by chronic anterior shoulder instability associated with GBL (<15%) and hyperlaxity, without compromising external rotation., Level of Evidence: Level IV, case series., (Copyright © 2021 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Purpose: The purpose of this study was to determine the 50 most cited articles on rotator cuff tear and their characteristics., Methods: Thomson ISI Web of Science was searched for the following search terms "rotator cuff" and "tear." The following characteristics were determined for each article: author(s), year of publication, source journal, geographic origin, article type (and subtype), and level of evidence for clinical articles., Results: The number of citations ranged from 1558 to 253. The 50 most often cited articles were published in 7 journals. The majority of the articles (n = 46) were clinical, with the remaining representing some type of basic science research. Among clinical articles, the case series (n = 23) was the most common article subtype. Nine articles were methodologic in that they proposed a new classification/scoring system or technique. The most common level of evidence was Level IV (n = 31)., Conclusion: This article provides clinicians, researchers, and trainees with a group of articles that should be taken into consideration as building blocks in the treatment of rotator cuff tears., Level of Evidence: Level IV, literature review., (Copyright © 2020 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Rotator cuff tears are among the most common orthopaedic conditions, with a very high social impact. A major concern is failure rates. To reduce these rates, recent years have seen increased attention to the biological augmentation of rotator cuff tears repairs, with a special focus on the application of mesenchymal stem cells (MSCs). Among the many tissues recognized as a source of MSCs, subacromial bursa recently has emerged. Another promising cell source was found to be the long head of the biceps tendon. Both those local MSC sources, unfortunately, are commonly considered discharge material. The purpose of this paper is to describe a simple yet fast arthroscopic technique of biological augmentation for rotator cuff repairs by mechanical harvesting and deployment of local MSCs sources, called LASCA (local autologous stem cells application), a feasible technique accessible to every shoulder surgeon and adaptable to many different techniques., (© 2020 by the Arthroscopy Association of North America. Published by Elsevier.)

Purpose: Latissimus dorsi tendon transfer is a surgical option for the treatment of massive irreparable posterosuperior rotator cuff tear. Whether a favourable clinical outcome is due to the latissimus dorsi muscle contraction rather than the passive tenodesis effect remains to be confirmed. The purpose of the current case-control study was to evaluate the shoulder kinematics and latissimus dorsi activation after latissimus dorsi tendon transfer., Methods: Eighteen patients suffering from irreparable rotator cuff tear that underwent latissimus dorsi tendon transfer and 18 healthy individuals were examined using a 3D kinematic tracking system and electromyography. Active maximal flexion-extension and abduction-adduction of the humerus were measured for the operated and the contralateral shoulder of the patients and the shoulder of healthy individuals to evaluate the range of motion (ROM) and scapulohumeral rhythm. Electromyographic comparison of isometric contraction between the latissimus dorsi of the operated and contralateral shoulder was carried out., Results: After arthroscopic-assisted latissimus dorsi tendon transfer, patients showed comparable flexion and abduction ROM to their asymptomatic contralateral shoulders and to the shoulders of healthy individuals. Significantly higher scapular ROM values were found between the latissimus dorsi tendon transfer side and the shoulders of healthy individuals. While performing external rotation with 0° shoulder abduction, a greater percentage of the electromyographic peak value (p = 0.047) and a higher latissimus dorsi internal/external rotation ratio (p = 0.004) were noted for the transferred muscle in comparison to the contralateral shoulder., Conclusion: Although the arthroscopic-assisted latissimus dorsi tendon transfer failed to normalize scapulothoracic joint movements of patients, a functional latissimus flap and a shoulder ROM similar to the contralateral side or the shoulder of healthy individuals can be expected after this procedure in patients with massive irreparable posterosuperior rotator cuff tear., Level of Evidence: III.

The Latarjet procedure is a method used for the treatment of shoulder instability in the presence of bone loss. A decade after the first description of the fully arthroscopic Latarjet procedure, modifications to the technique were reported to decrease the risk of complications and improve the position of the bone block. A recent trend toward the use of buttons to fix the coracoid has been reported. The technique described here is an arthroscopic Latarjet procedure that uses 2 pairs of round buttons as an alternative to screw fixation or the use of a single button, and the technique aims to combine the original procedure with safe and stable fixation., (© 2020 by the Arthroscopy Association of North America. Published by Elsevier.)

Background: The open Latarjet procedure is a standard surgical treatment option for anterior shoulder instability in patients with a high risk of failure following soft tissue stabilization. The arthroscopic technique has potential advantages of minimal invasiveness, reduced postoperative stiffness, and faster rehabilitation but is regarded as technically challenging with concern over surgical risk during the learning curve. The aim of this study was to undertake a multisurgeon, large-volume learning curve analysis of the arthroscopic Latarjet procedure using continuous learning curve analysis., Methods: Individual patient data from 12 surgeons across 5 countries were retrospectively reviewed. A total of 573 patients undergoing the arthroscopic Latarjet procedure were included. Outcome measures of learning were collected, including operative time, computed tomography (CT) bone-block positioning, complications, and patient-reported outcome measures (PROMs). A segmented linear regression modeling technique was used for learning curve analysis., Results: High-volume surgeons converged to an operative time steady state after 30-50 cases. Surgeons completing fewer procedures demonstrated a constant reduction in operative time without reaching a plateau. Low-volume surgeons completing fewer than 14 operations did not demonstrate a reduction in operative time. Accuracy of bone-block positioning on postoperative CT demonstrated constant improvement without reaching a plateau after 53 cases. There was no change in PROMs or complications with increased operative volume., Conclusion: Specialist shoulder surgeons require 30-50 arthroscopic Latarjet procedures to attain steady-state operative efficiency, during which there is improvement in bone-block positioning. Only surgeons expecting to undertake the arthroscopic Latarjet in high volume should consider adopting this procedure., (Copyright © 2019 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Background: Controversy surrounds the indication for treatment of type 3 acromioclavicular joint dislocation, and the optimal reconstructive technique has not yet been defined. Since the first description of the Weaver-Dunn procedure, several studies have described the clinical and radiological results that can be expected postoperatively; however, few studies have evaluated the outcomes of this technique for chronic type 3 acromioclavicular joint dislocation., Purpose/hypothesis: The purpose of this study was to evaluate the functional and radiographic mid- to long-term outcomes of a modified Weaver-Dunn procedure for chronic Rockwood type 3 acromioclavicular joint dislocation. We hypothesized that (1) functional outcomes comparable with sex- and age-matched healthy individuals could be achieved with the modified Weaver-Dunn procedure and (2) joint stability could be restored after surgery., Study Design: Case series; Level of evidence, 4., Methods: Out of 30 patients who sustained a chronic type 3 acromioclavicular joint dislocation, 27 had a minimum 12-month follow-up and were included in the study. All patients underwent a modified Weaver-Dunn procedure. The Constant-Murley score was used to assess patient postoperative function. Subjective evaluation of patient satisfaction with surgery was also recorded. Radiological assessment was performed postoperatively to evaluate superoinferior and anteroposterior joint stability., Results: After a mean follow-up period of 51.6 months, the mean Constant-Murley score was 90.1, which was 97.2% that of a group of sex- and age-matched healthy individuals. In the multivariate analysis, higher Constant-Murley score was associated with male sex (β = 0.385; P = .043) and higher subjective satisfaction scale (β = 0.528; P = .003). All patients returned to their previous work and sport activity levels having high satisfaction with surgery. Successful vertical acromioclavicular joint reduction was obtained in all but 1 patient; however, horizontal joint stability was not completely restored with the modified Weaver-Dunn procedure. No intraoperative complications occurred, and the postoperative complication rate was 7.4%., Conclusion: In patients with chronic type 3 acromioclavicular joint dislocation, the modified Weaver-Dunn procedure is an effective technique to restore vertical but not horizontal joint stability 4 years after surgery. High levels of satisfaction with surgery and functional outcomes comparable with sex- and age-matched healthy individuals can be achieved., Competing Interests: The authors declared that there are no conflicts of interest in the authorship and publication of this contribution. AOSSM checks author disclosures against the Open Payments Database (OPD). AOSSM has not conducted an independent investigation on the OPD and disclaims any liability or responsibility relating thereto., (© The Author(s) 2020.)

Background and O bjectives: The all-arthroscopic Latarjet (aL) procedure was introduced to manage recurrent shoulder instability. Our study aimed to report the outcomes of aL procedures with the Rowe, University of California-Los Angeles (UCLA), simple shoulder test (SST) scores, and range of motion (ROM) in external rotation at a minimum follow-up of 2 years. Material and Methods: A total of 44 patients presenting recurrent shoulder instability were managed with aL procedure. Clinical outcomes were assessed at a mean follow-up of 29.6 ± 6.9 months. The postoperative active ROM was measured and compared with the contralateral shoulder. The Rowe, UCLA, and SST scores were administered preoperatively and postoperatively. Results: No patients experienced infections or neuro-vascular injuries. Seven (15%) patients required revision surgery. After surgery, the external rotation was statistically lower compared to the contralateral shoulder, but it improved; clinical outcomes also improved in a statistically significant fashion. Conclusions: The aL produced good results in the management of recurrent shoulder instability, but the complication rate was still high even in the hands of expert arthroscopist., Competing Interests: The authors declare no conflict of interest.

Introduction: Partial-thickness rotator cuff tears are a common cause of shoulder pain and disability. Arthroscopic repair is an effective treatment for partial articular supraspinatus tendon avulsion (PASTA) lesions, and transtendon repair and completion of the tear and repair are the surgical techniques commonly used to treat such lesions. Our aim was to retrospectively evaluate the minimum 24-month clinical and radiological results of PASTA., Materials and Methods: Patients suffering from PASTA lesion who underwent arthroscopic repair with a minimum 24-month follow-up were included in this study. The Constant and Murley score (CMS) was used to assess the patients' functionality pre- and postoperatively. The postoperative patient assessment included the simple shoulder test (SST). Postoperative tendon integrity was evaluated by ultrasound examination., Results: 151 patients (153 shoulders) were retrospectively evaluated 73.9 (24-142) months after a completion-repair (94 cases) or transtendon repair (59 cases) of a PASTA lesion. The CMS significantly improved from 47.7 (22-63) preoperatively to 84.2 (62-100) postoperatively (p < 0.001). The mean postoperative SST score was 10.1 (5-12), and 95% of patients were satisfied with the surgery. No significant differences were noted between the two techniques in terms of postoperative CMS, SST score and satisfaction. Seventy-four and 43 cases treated with completion and repair and transtendon repair, respectively, performed ultrasound examination 66.1 (24-142) months after surgery. The overall retear rate was 13.7%, supraspinatus retears were observed in ten shoulder subjected to completion and repair (13.5%) and six shoulders subjected to transtendon repair (13.9%), and no significant differences were noted between the two techniques as for CMS (p = 0.896), SST (p = 0.973), satisfaction (p = 0.621) and retear (p = 0.999). Males and younger patients had a higher postoperative CMS (p values < 0.001), and SST score (p < 0.001 and p = 0.038, respectively)., Conclusions: Arthroscopic repair of PASTA lesion achieves high rates of repair integrity regardless of repair type and high levels of functional recovery and patient satisfaction 6 years after surgery.

Purpose: To compare the effectiveness of tenodesis and tenotomy in the treatment of long head of the biceps tendon (LHBT) lesions. The null hypothesis was that there is no difference in functional scores between the tenotomy and tenodesis groups., Methods: A total of 69 patients with a combined supraspinatus tear and LHBT lesion aged over 40 years entered this prospective comparative study and were randomly assigned to the arthroscopic LHB tenotomy or tenodesis group. Fifty-five patients (31 in the tenotomy group and 24 in the tenodesis group) were available for the 6- and 24-month post-operative evaluations., Results: There were no statistically significant differences in post-operative Constant and Murley score, quality of life, pain, and strengths between groups. Higher rates of Popeye's sign were noted 6 and 24 months post-operatively in the tenotomy group compared to tenodesis., Conclusions: Although tenotomy is affected by a higher incidence of cosmetic deformity, there is no superiority of arthroscopic tenodesis over tenotomy in the treatment of LHBT lesion as a concomitant procedure to an arthroscopic repair of the supraspinatus tendon in terms of functional outcomes, quality of life, pain, and strength measured 6 and 24 months post-operatively., Level of Evidence: I.

Purpose: To evaluate the minimum 2-year results and possible outcomes of arthroscopic partial repair in different patterns of irreparable rotator cuff tears (RCTs)., Methods: Patients suffering from an irreparable supraspinatus and a reparable infraspinatus tendons who underwent arthroscopic partial repair with a minimum 24-month follow-up were included in this study. The Constant and Murley score (CMS) was used to assess patients' functionality pre- and postoperatively. Postoperative patient assessment included the Simple Shoulder Test (SST) and the Short Form Health Survey questionnaire (SF-36). A postoperative range of motion, CMS, and strength were compared with the contralateral side. Postoperative SF-36 was compared with age- and sex-matched norms., Results: Ninety patients (95 shoulders) were reviewed after a mean follow-up of 7 (range 2-12) years. The subscapularis tendon was intact in 80 shoulders and torn but completely reparable in the remaining 15 shoulders. The CMS improved from 39.1 ± 8.4 (10-61) to 76.3 ± 9.7 (32-93) (P < .001). The mean postoperative SST was 9.1 ± 2.2 (1-12). Although the patients had lower postoperative abduction and internal rotation, strength in abduction and CMS in comparison with the measurements from the contralateral side, the median postoperative SF-36 physical and mental component summaries were 98% and 100% of the matched norms. No significant differences were found in postoperative outcomes according to the RCT pattern. Males showed significantly higher strengths in abduction (B = -1.384, 95% confidence interval [CI] -2.144 to -0.624, η 2  = 0.123, P < .001, 95% power), external rotation (B = -3.646, 95% CI -5.2 to -2.092, η 2  = 0.189, P < .001, 100% power), and internal rotation (B = -3.867, 95% CI -5.676 to -2.057, η 2  = 0.162, P < .001, 99% power) than females. Significantly higher ranges of abduction (η 2  = 0.431, P = .019, 98% power) and external rotation (η 2  = 0.417, P < .03, 97% power) were noted in younger patients. Higher strengths in abduction (η 2  = 0.495, P = .002, 100% power) and internal rotation (η 2  = 0.464, P = .006, 99% power) were also reported in these patients., Conclusions: When there is an irreparable supraspinatus but there is still the possibility to repair the infraspinatus and subscapularis, the arthroscopic partial cuff repair should be considered as an effective surgical option. Indeed, a significant clinical improvement can be achieved and, differently from pure symptomatic surgical procedures, this technique represents a reasonable effort to restore, at least in part, the shoulder joint functionality. Successful and reliable results can be expected at an average 7-year follow-up, regardless of the RCT pattern. Female and older patients have a greater likelihood of lower functional outcomes., Level of Evidence: Level IV, therapeutic case series., (Copyright © 2016 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)

Several treatment options for chronic, massive rotator cuff tears exist, and they include debridement with possible biceps tenotomy or tenodesis, open or arthroscopic partial repair, muscle or tendon transfer, superior capsule reconstruction, synthetic patch augmentation, and reverse total shoulder arthroplasty. The aim of this technique article is to describe our preferred surgical option for irreparable, massive rotator cuff tears with an irreparable supraspinatus, a reparable infraspinatus, and an intact or reparable subscapularis tendon.

Background: Arthroscopic-assisted latissimus dorsi tendon transfer (LDTT) has been recently introduced for treatment of irreparable, posterosuperior massive rotator cuff tears. We sought to evaluate the functional outcomes of this technique and to check for possible outcome predictors., Methods: The study reviewed 86 patients (aged 59.8 ± 5.9 years) who underwent an arthroscopic-assisted latissimus dorsi tendon transfer after 36.4 ± 9 months of follow-up. Of these, 14 patients (16.3%) sustained an irreparable massive rotator cuff tear after a failed arthroscopic rotator cuff repair. The Constant and Murley score (CMS) was used to assess patients' functionality preoperatively and at follow-up., Results: As a group, the CMS improved with surgery from 35.5 ± 6.1 to 69.5 ± 12.3 (P < .001). A lower preoperative CMS and a previous failed rotator cuff repair resulted in lower postoperative range of motion (P = .044 and P = .007, respectively) and CMS (P = .042 and P = .018, respectively). A previous rotator cuff repair resulted in lower satisfaction with surgery (P = .009). Gender and age did not affect the clinical outcomes., Conclusions: Our results support the effectiveness of arthroscopic-assisted LDTT in the treatment of patients with an irreparable, posterosuperior massive rotator cuff tears in pain relief, functional recovery, and postoperative satisfaction. Patients with lower preoperative CMS and a history of failed rotator cuff repair have a greater likelihood of having a lower clinical result. However, the favorable values of summary postoperative scores do not exclude these patients as candidates for arthroscopic-assisted LDTT., (Copyright © 2016 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)

Purpose: To investigate what factors might predict the results of arthroscopic stabilization for anterior shoulder instability., Methods: One hundred and forty-three patients averaging 25 (15-58) years with traumatic anterior shoulder instability who underwent arthroscopic stabilization were reviewed at a median follow-up of 81 (24-172) months. Sixty-two (56.4 %) individuals were involved in contact sport activities, and there were 40 (30 %) patients who had only one dislocation prior to having surgery. Rowe score was measured preoperatively and at follow-up., Results: Thirty-three (23.1 %) patients experienced recurrent instability 12 (1-120) months after surgery, and 15 of those underwent further surgery. There was a statistically significant lower risk of failure (p = 0.027) for patients who had a surgical procedure after only one episode of shoulder dislocation. Patients treated after the second or further episode of shoulder dislocation exhibited a mean odds ratio for failure of 3.8 (95 % confidence interval 1.2-11.6, p = 0.044) with regard to first-time dislocators. The Rowe score significantly improved from a preoperative value of 25 (5-55) to a postoperative value of 100 (40-100) (p < 0.001). A significantly higher postoperative Rowe score was found in patients older than 24 years of age at the operation (p = 0.011) and in patients with less than eight dislocations prior to surgery (p = 0.05)., Conclusions: These results suggest that better functional results following arthroscopic stabilization can be expected in patients over 24 years of age and in those with a fewer number of dislocations preoperatively. A lower rate of recurrence can be expected if the patient undergoes surgery after the first episode of dislocation., Level of Evidence: Prognostic study, Level II.