Specific patient-related prognostic factors for rotator cuff repair: a systematic review

Definition of irreparable rotator cuff tear: a scoping review of prospective surgical therapeutic trials to evaluate current practice

BACKGROUND

The definition of irreparable rotator cuff tear (IRCT) is controversial. This scoping review provides definitions used to describe IRCT in the literature. This scoping review (1) identified criteria used in the definition of IRCT and (2) investigated the current state of those criteria in prospective surgical therapeutic trials.

METHODS

This scoping review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. PubMed, Scopus, and Web of Science were searched in March 2023. Studies were screened against predetermined inclusion and exclusion criteria. Criteria regarding clinical symptoms, preoperative images, and intraoperative findings were captured respectively.

RESULTS

A total of 41 prospective studies were eligible for inclusion, and 35 studies (85.4%) defined IRCT. IRCT was defined on the basis of the following main criteria: preoperative image findings (28/35), intraoperative findings (24/35), and symptoms (16/35). With regard to preoperative images, IRCT was mainly defined on the basis of retraction of the tendon in the coronal plane (22/28), the severity of fatty degeneration (19/28), and ruptured tendon number or width of the defect in the sagittal plane (17/28).

CONCLUSION

This scoping review highlights the lack of a standardized definition for IRCT in clinical practice, with common predictive criteria including a duration of over 6 months, retraction beyond 5 cm, Goutallier grade 3 fatty infiltration, and the rupture of two or more tendons. However, surgeons should apply more than one criterion when examining preoperative images and confirm reparability during surgery. A more objective manner of evaluating intraoperative reparability is necessary.

Early versus delayed mobilization for arthroscopic rotator cuff repair (small to large sized tear): a meta-analysis of randomized controlled trials

BACKGROUND

The timing to start passive or active range of motion (ROM) after arthroscopic rotator cuff repair remains unclear. This systematic review and meta-analysis evaluated early versus delayed passive and active ROM protocols following arthroscopic rotator cuff repair. The aim of this study is to systematically review the literature on the outcomes of early active/passive versus delayed active/passive postoperative arthroscopic rotator cuff repair rehabilitation protocols.

METHODS

A systematic review and meta-analysis of randomized controlled trials (RCTs) published up to April 2022 comparing early motion (EM) versus delayed motion (DM) rehabilitation protocols after arthroscopic rotator cuff repair for partial and full-thickness tear was conducted. The primary outcome was range of motion (anterior flexion, external rotation, internal rotation, abduction) and the secondary outcomes were Constant-Murley score (CMS), Simple Shoulder Test Score (SST score) and Visual Analogue Scale (VAS).

RESULTS

Thirteen RCTs with 1,082 patients were included in this study (7 RCTs for early passive motion (EPM) vs. delayed passive motion (DPM) and 7 RCTs for early active motion (EAM) vs. delayed active motion (DAM). Anterior flexion (1.40, 95% confidence interval (CI), 0.55-2.25) and abduction (2.73, 95%CI, 0.74-4.71) were higher in the EPM group compared to DPM. Similarly, EAM showed superiority in anterior flexion (1.57, 95%CI, 0.62-2.52) and external rotation (1.59, 95%CI, 0.36-2.82), compared to DAM. There was no difference between EPM and DPM for external rotation, retear rate, CMS and SST scores. There was no difference between EAM and DAM for retear rate, abduction, CMS and VAS.

CONCLUSION

EAM and EPM were both associated with superior ROM compared to the DAM and DPM protocols. EAM and EPM were both safe and beneficial to improve ROM after arthroscopic surgery for the patients with small to large sized tears.

Development and internal validation of a model predicting patient-reported shoulder function after arthroscopic rotator cuff repair in a Swiss setting

BACKGROUND

Prediction models for outcomes after orthopedic surgery provide patients with evidence-based postoperative outcome expectations. Our objectives were (1) to identify prognostic factors associated with the postoperative shoulder function outcome (the Oxford Shoulder Score (OSS)) and (2) to develop and validate a prediction model for postoperative 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. Thirty-two potential prognostic factors were used for prediction model development. Two sets of factors identified using the knowledge from three experienced surgeons (Set 1) and Bayesian projection predictive variable selection (Set 2) were compared in terms of model performance using R squared and root-mean-squared error (RMSE) across 45 multiple imputed data sets using chained equations and complete case data.

RESULTS

Multiple imputation using data from 1510 patients was performed. Set 2 retained the following factors: American Society of Anesthesiologists (ASA) classification, baseline level of depression and anxiety, baseline OSS, operation duration, tear severity, and biceps status and treatment. Apparent model performance was R-squared = 0.174 and RMSE = 7.514, dropping to R-squared = 0.156, and RMSE = 7.603 after correction for optimism.

CONCLUSION

A prediction model for patients undergoing ARCR was developed using solely baseline and operative data in order to provide patients and surgeons with individualized expectations for postoperative shoulder function outcomes. Yet, model performance should be improved before being used in clinical routine.

Contrast-Enhanced Ultrasound-Assessed Supraspinatus Muscle Perfusion Indicates Better Tissue Vitality and Outcome After Supraspinatus Tendon Repair and Subacromial Decompression

OBJECTIVE

Supraspinatus tendon (SSP) tears are a frequent indication for shoulder surgery. Therapy options include physiotherapy, tendon repair and less invasive surgical options like subacromial decompression (SAD). The selection of the most appropriate treatment depends on the specific characteristics and needs of each patient subgroup. Typically, physically active patients are candidates for tendon repair, while a conservative approach is preferred for individuals with severe muscle degeneration or low physical demands. The goal of this study was to assess the impact of contrast-enhanced ultrasound (CEUS)-assessed SSP muscle perfusion on post-operative shoulder function and tendon healing in patients undergoing SSP repair or SAD, thereby enhancing personalized therapy for SSP tendon tears.

METHODS

Two cohorts of patients with SSP tendon tears were treated either by SAD or tendon repair. Pre-operative and 6-month post-operative SSP muscle perfusion was quantified using CEUS and investigated as a surrogate for tissue vitality. The magnetic resonance imaging-derived parameters fatty infiltration and tendon retraction and established shoulder function scores were assessed pre- and post-operatively.

RESULTS

Thirty-five SSP repair patients were compared with 20 SAD patients. Pre-operative perfusion was comparable in the SAD and SSP repair cohorts when a re-tear occurred (wash-in perfusion index = 103.8 ± 124.0 vs. 114.6 ± 155.0, p = 0.83), while being significantly higher among patients with an intact repair (103.8 ± 124 vs. 325.4 ± 388.6, p = 0.006). Below-median pre-operative muscle perfusion was associated with lower post-operative shoulder function (Constant score: 59 ± 28 vs. 78 ± 19, p = 0.012).

CONCLUSION

CEUS can visualize SSP muscle perfusion as a surrogate for tissue vitality and tendon healing, which is associated with better post-operative shoulder function.

Increased operative time has a negative impact on clinical outcome in arthroscopic rotator cuff repair

BACKGROUND

Few data are available about the impact of operative time on outcome of rotator cuff repair.

AIM

The aim of this study was to evaluate the impact of operative time on clinical outcome and tendon healing after arthroscopic rotator cuff repair.

METHODS

Patients operated on for distal supraspinatus tear in our institution between 2012 and 2018 were included retrospectively. Operative time, from skin incision until skin closure, was extracted from medical files. For statistical analysis, operative time was treated as a quantitative variable. Endpoints were clinical outcome (Constant score, range of motion), tendon healing (on CT or MRI) and complications at 1 year. The significance threshold was set at p = 0.05.

RESULTS

A total of 219 Patients, with a mean age of 54.6 years (range 40-70 years), were included. Mean operative time 44.9 min (range 14-140 min). Significant correlations (p < 0.05) were found for Constant score and external rotation at 1 year: increasing operative time by 1 min led to a decrease in Constant score of 0.115 points, or 6.9 points for a 60-min increase (p = 0.0167) and a decrease in external rotation of 0.134°, or 8.04° for a 60-min increase (p = 0.0214). No significant correlations were found for anterior elevation at 1 year (p = 0.2577), tendon healing at 1 year (p = 0.295) or onset of complications during follow-up (p = 0.193).

DISCUSSION

The minimal clinically important difference in Constant score in patients undergoing rotator cuff surgery is between 6 and 10 points. An increase of more than 60 min in operative time significantly impacted clinical outcome of arthroscopic distal supraspinatus repair, but not tendon healing.

LEVEL OF EVIDENCE

Level III: Retrospective Cohort Design. Therapeutic Study.

Preoperative factors affecting the quality of life after arthroscopic rotator cuff repair: a prospective study

Background

Rotator cuff tears are well known to cause significant pain and disability, having a marked impact on an individual's quality of life. This prospective study aimed to analyze the various patient factors and their impact on health-related quality of life (HrQoL) post arthroscopic rotator cuff repair (RCR).

Material and Methods

We prospectively analyzed 95 patients at one year and 81 patients at two years, with complete rotator cuff tear, who underwent arthroscopic repair of the same. The 36-Item Short Form Survey (physical and mental component score), visual analog scale (pain, function), and QuickDASH questionnaires were administered to all the patients preoperatively and at one- and two-year follow-ups. Relationships between various patient factors (age, gender, side, duration of symptoms, pseudoparalysis, diabetes mellitus [DM], type, and size of tear) and outcome measures were analyzed.

Results

All outcome parameters showed significant improvement at one- and two-year follow-ups. Patient factors, such as gender, tear type (traumatic vs degenerative), and DM, affected all outcome parameters and were significant even in the regression analysis model at a 2-year follow-up. Factors such as age and symptoms duration were significant only at 1-year follow-up, with older age and patients with symptoms > 6 weeks showing more disability. Side (dominant or nondominant), tear size, and pseudoparalysis do not affect outcomes.

Conclusions

This study showed that arthroscopic RCR significantly improved HrQoL post arthroscopic RCRs. Factors independently affecting HrQoL were noted as gender, tear type, and DM. On the other hand, age, side involved, duration of symptoms, pseudoparalysis, and tear size had no independent effect on HrQoL at a two-year follow-up.

CEUS-assessed supraspinatus muscle perfusion improves after tendon repair and predicts anatomical and functional outcome: A 1-year prospective pilot study

Rotator cuff tear including SSP (Supraspinatus) tendon tears are a very common and often painful condition with several therapeutic options such as tendon repair. Reflected by the high retear rates, the preoperative selection of patients suitable for surgery or conservative treatment, which often yields comparable results, remains difficult. Using contrast-enhanced ultrasound (CEUS), it is possible to quantify the SSP muscle perfusion as a surrogate parameter for its vitality and healing capabilities. In this study, we enrolled 20 patients who underwent an SSP repair for a preoperative and two postoperative (6 months and 1 year) clinical and sonographic exams including CEUS. Along with functional improvement (p < 0.001, Constant score), we found a significant increase in CEUS-assessed muscle perfusion after tendon repair (p < 0.001). Furthermore, weak preoperative muscle perfusion was associated with a higher risk of a retear (χ²  = 0.045) and a moderate trend toward lower postoperative shoulder function that did not reach significance (r = 0.435; p = 0.055, DASH score). If confirmed in larger studies, CEUS might be a valuable additional diagnostic method for a precise selection of patients who most likely profit from a tendon repair and those who can be treated conservatively with an equally good outcome.

Tear size, general health status and smoking influence functional outcome at 5 years following arthroscopic rotator cuff repair

Introduction

There is limited medium-term outcome data regarding the predictors of functional outcome and patient satisfaction after arthroscopic rotator cuff repair.

Methods

287 patients that underwent arthroscopic rotator cuff repair under a high-volume single surgeon were contacted at a minimum of 4 years following surgery. Patient demographics, tear size and co-morbidities were pre-operatively recorded. The Oxford shoulder score, EuroQol 5-dimensional score and patient satisfaction were recorded at final follow-up.

Results

234 (81.5%) patients completed follow-up at a mean of 5.5 (4-9) years. There were 126 males and 108 females with a mean age of 60 (range 25-83) years. The majority of patients (n = 211, 90%) were satisfied with their final outcome. Multivariate linear regression analysis (R 2 = 0.64) identified that increasing tear size (p = 0.04), worsening general health assessed by the EuroQol 5-Dimensional (p < 0.001), and smoking (p = 0.049) were associated with a worse Oxford shoulder score. Logistic regression analysis (R 2 = 0.13) identified that worsening general health assessed by the EuroQol 5-Dimensional (p < 0.001), and smoking (p = 0.01) were associated with an increased risk of patient dissatisfaction.

Conclusion

General health status and smoking are independent predictors of functional outcome and patient satisfaction at medium-term follow-up following arthroscopic rotator cuff repair.

Diagnosing, Managing, and Supporting Return to Work of Adults With Rotator Cuff Disorders: A Clinical Practice Guideline

OBJECTIVE: To develop a clinical practice guideline covering the assessment, management, and return to work of adults with rotator cuff disorders. DESIGN: Clinical practice guideline. METHODS: Using systematic reviews, appraisal of the literature, and an iterative approach to obtain consensus from key stakeholders, clinical recommendations and algorithms were developed in the context of the health care system and work environment of the province of Quebec (Canada). RESULTS: Recommendations (n = 73) and clinical decision algorithms (n = 3) were developed to match the objectives. The initial assessment should include the patient's history, a subjective assessment, and a physical examination. Diagnostic imaging is only necessary in select circumstances. Acetaminophen, nonsteroidal anti-inflammatory drugs, and injection therapies may be useful to reduce pain in the short term. Clinicians should prescribe an active and task-oriented rehabilitation program (exercises and education) to reduce pain and disability in adults with rotator cuff disorders. Subacromial decompression is not recommended to treat rotator cuff tendinopathy. Surgery is appropriate for selected patients with a full-thickness rotator cuff tear. A return-to-work plan should be developed early, in collaboration with the worker and other stakeholders, and must combine multiple strategies to promote return to work. CONCLUSION: This clinical practice guideline was developed to assist the multidisciplinary team of clinicians who provide health care for adults with a rotator cuff disorder. The CPG guides clinical decisionmaking for diagnosis and treatment, and planning for successful return to work. J Orthop Sports Phys Ther 2022;52(10):647-664. Epub: 27 July 2022. doi:10.2519/jospt.2022.11306.

Prognostic factors for improvement of shoulder function after arthroscopic rotator cuff repair: a systematic review

Background

The identification of factors that specify prognostic models for postoperative results should be based on the best scientific evidence and expert assessment. We aimed to identify, map, and evaluate potential prognostic factors for the improvement of shoulder function in patients undergoing arthroscopic rotator cuff repair.

Methods

Longitudinal primary studies of arthroscopic rotator cuff repair reporting any multivariable factor analyses for shoulder function improvement with an endpoint assessment of at least 6 months were included. We systematically searched EMBASE, Medline, and Scopus for articles published between January 2014 and June 2021. The risk of bias of included studies and the quality of evidence were assessed using the Quality in Prognosis Studies tool and an adapted Grading of Recommendations, Assessment, Development, and Evaluations framework.

Results

Overall, 24 studies including 73 outcome analyses were included. We classified younger age and smaller tear size as probably prognostic for a greater improvement in objective outcomes. Shorter symptom duration, absence of a worker compensation claim, low preoperative level of functional status, and high preoperative pain level were classified as probably prognostic for greater improvement in patient-reported outcome measures. The quality of the synthesized evidence was low. Twenty-one studies had an overall high risk of bias.

Conclusion

Six potential prognostic factors for shoulder function after arthroscopic rotator cuff repair were identified. Along with ongoing expert opinion assessments, they will feed into a prognostic model-building process.

Are psychosocial variables, sleep characteristics or central pain processing prognostic factors for outcome following rotator cuff repair? A protocol for a prospective longitudinal cohort study

INTRODUCTION

Prognosis following surgical rotator cuff repair (RCR) is often established through the assessment of non-modifiable biomedical factors such as tear size. This understates the complex nature of recovery following RCR. There is a need to identify modifiable psychosocial and sleep-related variables, and to find out whether changes in central pain processing influence prognosis after RCR. This will improve our knowledge on how to optimise recovery, using a holistic rehabilitation approach.

METHODS AND ANALYSIS

This longitudinal study will analyse 141 participants undergoing usual care for first time RCR. Data will be collected 1-21 days preoperatively (T1), then 11-14 weeks (T2) and 12-14 months (T3) postoperatively. We will use mixed-effects linear regression to assess relationships between potential prognostic factors and our primary and secondary outcome measures-the Western Ontario Rotator Cuff Index; the Constant-Murley Score; the Subjective Shoulder Value; Maximal Pain (Numeric Rating Scale); and Quality of Life (European Quality of Life, 5 dimensions, 5 levels). Potential prognostic factors include: four psychosocial variables; pain catastrophising, perceived stress, injury perceptions and patients' expectations for RCR; sleep; and four factors related to central pain processing (central sensitisation inventory, temporal summation, cold hyperalgesia and pressure pain threshold). Intercorrelations will be assessed to determine the strength of relationships between all potential prognostic indicators.Our aim is to explore whether modifiable psychosocial factors, sleep-related variables and altered central pain processing are associated with outcomes pre-RCR and post-RCR and to identify them as potential prognostic factors.

ETHICS AND DISSEMINATION

The results of the study will be disseminated at conferences such as the European Pain Congress. One or more manuscripts will be published in a peer-reviewed SCI-ranked journal. Findings will be reported in accordance with the STROBE statement and PROGRESS framework. Ethical approval is granted by the Ethical commission of Canton of Zurich, Switzerland, No: ID_2018-02089 TRIAL REGISTRATION NUMBER: NCT04946149.

The effects of smoking on clinical and structural outcomes after rotator cuff repair: a systematic review and meta-analysis

BACKGROUND

Several factors have been reported to adversely affect clinical and structural outcomes after rotator cuff repair (RCR). However, the effects of smoking on rotator cuff healing and clinical outcomes remain controversial. The purpose of this study was to compare the clinical and structural outcomes after RCR between smokers and nonsmokers. We hypothesized that there would be no significant difference in the clinical scores after RCR and that smoking would be associated with a significantly increased risk of retear and reoperation.

METHODS

This systematic review was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines using the PubMed, Cochrane Library, and Embase databases. We included only articles in which patients underwent arthroscopic and open RCR, the clinical outcome scores were reported for smokers and nonsmokers, and the number of rotator cuff retears and reoperations were reported. Data relevant to this study were extracted and statistically analyzed. We used the Newcastle-Ottawa Scale to assess the risk of bias in each study and calculated the I² value to quantify the effect of heterogeneity.

RESULTS

Fourteen eligible articles were identified, with 73,817 participants (8553 smokers and 65,264 nonsmokers). The meta-analysis demonstrated that there were no significant differences in the American Shoulder and Elbow Surgeons score (P = .10), Simple Shoulder Test score (P = .19), University of California-Los Angeles score (P = .09), or visual analog scale score (P = .19) between smokers and nonsmokers after surgery, but the Constant score was significantly lower (P = .005) for smokers. Smoking was significantly associated with an increased risk of retear (P = .002; risk ratio, 2.06 [95% confidence interval, 1.30-3.28]; I² = 31%) and reoperation (P < .001; risk ratio, 1.29 [95% confidence interval, 1.20-1.40]; I² = 36%) in patients after RCR.

CONCLUSION

Besides the Constant score, which was lower in smokers, there were no significant differences in the clinical scores after RCR between smokers and nonsmokers. However, smoking was associated with a significantly increased risk of retear and reoperation.

Prognostic factors for the occurrence of post-operative shoulder stiffness after arthroscopic rotator cuff repair: a systematic review

Background

Post-operative shoulder stiffness (POSS) is one of the most frequent complications after arthroscopic rotator cuff repair (ARCR). Factors specifying clinical prediction models for the occurrence of POSS should rely on the literature and expert assessment. Our objective was to map prognostic factors for the occurrence of POSS in patients after an ARCR.

Methods

Longitudinal studies of ARCR reporting prognostic factors for the occurrence of POSS with an endpoint of at least 6 months were included. We systematically searched Embase, Medline, and Scopus for articles published between January 1, 2014 and February 12, 2020 and screened cited and citing literature of eligible records and identified reviews. The risk of bias of included studies and the quality of evidence were assessed using the Quality in Prognosis Studies tool and an adapted Grading of Recommendations, Assessment, Development and Evaluations framework. A database was implemented to report the results of individual studies. The review was registered on PROSPERO (CRD42020199257).

Results

Seven cohort studies including 23 257 patients were included after screening 5013 records. POSS prevalence ranged from 0.51 to 8.75% with an endpoint ranging from 6 to 24 months. Due to scarcity of data, no meta-analysis could be performed. Overall risk of bias and quality of evidence was deemed high and low or very low, respectively. Twenty-two potential prognostic factors were identified. Increased age and male sex emerged as protective factors against POSS. Additional factors were reported but do require further analyses to determine their prognostic value.

Discussion

Available evidence pointed to male sex and increased age as probable protective factors against POSS after ARCR. To establish a reliable pre-specified set of factors for clinical prediction models, our review results require complementation with an expert's opinion.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12891-022-05030-4.

The functional outcome of arthroscopic rotator cuff repair with double-row knotless vs knot-tying anchors

To date two main techniques are used in arthroscopic full-thickness rotator cuff tears, the conventional knot-tying suture bridge technique and the knotless technique. We evaluated whether there is a difference in clinical outcome using both techniques. Our patients underwent arthroscopic treatment of full-thickness rotator cuff tears, and we retrospectively evaluated clinical function, strength and surgery time. Eighty-three shoulders operated between September 2012 and December 2013 were included in the study. We had nineteen patients in the knotless group, and sixty-four in the knot-tying group. In addition, we performed preoperatively radiological (magnetic resonance imaging-MRI) conformation of full-thickness rotator cuff tear in our patients. For clinical evaluation, we used Quick Disabilities of the Arm, Shoulder and Hand score (q-DASH) and the Shoulder Pain and Disability (SPADI) score, and we measured the strength of a range of motion postoperatively using a conventional dynamometer. The patients were evaluated preoperatively, and at 6, 9, and 12 months postoperatively. The follow-up period was 12 months. The scores in both treatment groups improved at twelve months follow-up, but there was no statistical difference between both groups at twelve months after surgery; q-DASH score between groups (p = 0.092) and SPADI score (p = 0.700). Similarly, there was no statistical difference between the groups in regard to strength, surgery time, and range of motion at the twelve months follow-up. Our data confirm that both techniques may be used successfully to repair full-thickness rotator cuff tears with very good functional outcome.Level of evidence IV.

Imaging of traumatic shoulder injuries – Understanding the surgeon’s perspective

Imaging plays a key role in the assessment and management of traumatic shoulder injuries, and it is important to understand how the imaging details help guide orthopedic surgeons in determining the role for surgical treatment. Imaging is also crucial in preoperative planning, the longitudinal assessment after surgery and the identification of complications after treatment. This review discusses the mechanisms of injury, key imaging findings, therapeutic options and associated complications for the most common shoulder injuries, tailored to the orthopedic surgeon’s perspective.

Assessing the accuracy of arthroscopic and open measurements of the size of rotator cuff tears: A simulation-based study

BACKGROUND

Arthroscopic procedures are commonly performed for rotator cuff pathology. Repair of rotator cuff tears is a commonly performed procedure. The intraoperative evaluation of the tear size and pattern contributes to the choice and completion of the technique and the prognosis of the repair.

AIM

To compare the arthroscopic and open measurements with the real dimensions of three different patterns of simulated rotator cuff tears of known size using a plastic shoulder model.

METHODS

We created three sizes and patterns of simulated supraspinatus tears on a plastic shoulder model (small and large U-shaped, oval-shaped). Six orthopaedic surgeons with three levels of experience measured the dimensions of the tears arthroscopically, using a 5 mm probe, repeating the procedure three times, and then using a ruler (open technique). Arthroscopic, open and computerized measurements were compared.

RESULTS

A constant underestimation of specific dimensions of the tears was found when measured with an arthroscope, compared to both the open and computerized measurements (mean differences up to -7.5 ± 5.8 mm, P < 0.001). No differences were observed between the open and computerized measurements (mean difference -0.4 ± 1.6 mm). The accuracy of arthroscopic and open measurements was 90.5% and 98.5%, respectively. When comparing between levels of experience, senior residents reported smaller tear dimensions when compared both to staff surgeons and fellows.

CONCLUSION

This study suggests that arthroscopic measurements of full-thickness rotator cuff tears constantly underestimate the dimensions of the tears. Development of more precise arthroscopic techniques or tools for the evaluation of the size and type of rotator cuff tears are necessary.

Prediction of Shoulder Stiffness After Arthroscopic Rotator Cuff Repair

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.

Rotator cuff repair rehabilitation considerations and respective guidelines: a narrative review

Current rotator cuff repair rehabilitation protocols focus on multiple areas, including protecting the healing tissue, optimizing range of motion and strength, and returning the individual to labor demanding and sport-specific tasks. Post-operative rehabilitation timelines with consideration of the tear size remain variable among practitioners. Prognostic factors, healing rates, range of motion timeline, exercise progressions, and guidance on return to sport and work activity are the many factors that can help guide rotator cuff repair rehabilitation and ultimately may reduce failure rates and improve outcomes. The purpose of this narrative review is to outline the multi-factorial nature of rotator cuff pathology and guide treatment based on a multitude of factors.

Workers' Compensation Status in Association with a High NDI Score Negatively Impacts Post-Operative Dysphagia and Dysphonia Following Anterior Cervical Fusion

BACKGROUND

Anterior cervical discectomy and fusion (ACDF) is a safe and effective procedure but has approach-related complications like postoperative dysphagia and dysphonia (PDD). Patient-reported outcome measures including the Hospital for Special Surgery Dysphagia and Dysphonia Inventory (HSS-DDI) have been used for the assessment of PDD. Various factors have been described that affect ACDF outcomes, and our aim was to investigate the effect of workers' compensation (WC) status.

METHODS

We included patients who underwent ACDF from 2015 to 2018 stratified according to insurance status: WC/non-WC. PDDs were assessed using the HSS-DDI score. We conducted logistic regression analyses. Statistical significance was set at P < 0.05.

RESULTS

We included 287 patients, 44 (15.33%) WC and 243 (84.67%) non-WC. A statistical comparison revealed a clinically relevant difference in the HSS-DDI total score and both subdomains (P = 0.015; dysphagia P = 0.021; dysphonia P = 0.002). Additional logistic regression analysis adjusting for preoperative Neck Disability Index scores resulted in no clinically relevant differences in the HSS-DDI total score and both subdomains (total score P = 0.420; dysphagia P = 0.531; dysphonia 0.315).

CONCLUSIONS

WC status was associated with a worse HSS-DDI score but could not be shown to be an independent risk factor for PDD. The preoperative NDI score was a strong predictor for PDD with a clinically relevant difference in the HSS DDI score (P < 0.0001). Surgeon awareness of risk factors for PDD such as WC status, even if it could not be shown as independent, is important as it may influence surgical decision making and managing patient expectations.

Acromioclavicular joint arthritis is not an indication for routine distal clavicle excision in arthroscopic rotator cuff repair

PURPOSE

To evaluate the significance of untreated primary acromioclavicular joint (ACJ) osteoarthritis, encountered during arthroscopic rotator cuff repair (RCR), as a cause of persistent symptomatology and need for revision surgery.

METHODS

In a cohort of 811 consecutive patients older than 55 years who underwent RCR, the effect of primary ACJ osteoarthritis presence was prospectively examined. A total of 497 patients with mild/moderate and severe ACJ osteoarthritis based on preoperative MRI evaluation were allocated to Group A (n = 185, symptomatic ACJ) and Group B (n = 312, asymptomatic ACJ). Distal clavicle excision was not performed regardless of the presence of pain. The minimum follow-up was 28 months (28-46). The visual analogue scale (VAS) pain scores were assessed for ACJ pain on palpation, the cross body adduction test, the Constant-Murley, and the American Shoulder and Elbow Surgeons (ASES).

RESULTS

The overall loss to follow-up rate was 3.82% (19 patients: 11 in Group A and eight in Group B). The mean ASES score at the latest follow-up was 91.16 ± 9.3 and 92.37 ± 10.44 in Groups A and B, respectively, and the mean Constant-Murley score was 96.36 ± 5.7 and 95.76 ± 4.6 in Groups A and B, respectively. There was no statistical significance between regarding both scores. Localised ACJ pain on palpation and pain on cross body adduction were diminished in both the symptomatic and asymptomatic group. There were five cases (1%: two in Group A and three in Group B) with persistent ACJ pain who had failed the conservative treatment, and ACJ excision was necessary to alleviate the symptoms. All revision operations were uncomplicated with symptom resolution.

CONCLUSION

Untreated ACJ osteoarthritis, symptomatic or not, encountered during arthroscopic RCR is associated with a low percentage of failure. Routine distal clavicle excision is not absolutely necessary, even in patients with symptomatic ACJ osteoarthritis.

LEVEL OF EVIDENCE

II, Prospective cohort study.

Swiss-wide multicentre evaluation and prediction of core outcomes in arthroscopic rotator cuff repair: protocol for the ARCR_Pred cohort study

INTRODUCTION

In the field of arthroscopic rotator cuff repair (ARCR), reporting standards of published studies differ dramatically, notably concerning adverse events (AEs). In addition, prognostic studies are overall methodologically poor, based on small data sets and explore only limited numbers of influencing factors. We aim to develop prognostic models for individual ARCR patients, primarily for the patient-reported assessment of shoulder function (Oxford Shoulder Score (OSS)) and the occurrence of shoulder stiffness 6 months after surgery. We also aim to evaluate the use of a consensus core event set (CES) for AEs and validate a severity classification for these events, considering the patient's perspective.

METHODS AND ANALYSIS

A cohort of 970 primary ARCR patients will be prospectively documented from several Swiss and German orthopaedic clinics up to 24 months postoperatively. Patient clinical examinations at 6 and 12 months will include shoulder range of motion and strength (Constant Score). Tendon repair integrity status will be assessed by ultrasound at 12 months. Patient-reported questionnaires at 6, 12 and 24 months will determine functional scores (subjective shoulder value, OSS), anxiety and depression scores, working status, sports activities, and quality of life (European Quality of Life 5 Dimensions 5 Level questionnaire). AEs will be documented according to a CES. Prognostic models will be developed using an internationally supported regression methodology. Multiple prognostic factors, including patient baseline demographics, psychological, socioeconomic and clinical factors, rotator cuff integrity, concomitant local findings, and (post)operative management factors, will be investigated.

ETHICS AND DISSEMINATION

This project contributes to the development of personalised risk predictions for supporting the surgical decision process in ARCR. The consensus CES may become an international reference for the reporting of complications in clinical studies and registries. Ethical approval was obtained on 1 April 2020 from the lead ethics committee (EKNZ, Basel, Switzerland; ID: 2019-02076). All participants will provide informed written consent before enrolment in the study.

TRIAL REGISTRATION NUMBER

NCT04321005.

PROTOCOL VERSION

Version 2 (13 December 2019).

Prognostische Faktoren der arthroskopischen Rotatorenmanschettenrekonstruktion

Hintergrund

Rupturen der Rotatorenmanschette sind eine der häufigsten Erkrankungen des Bewegungsapparats. Die klinischen und strukturellen Ergebnisse nach einer arthroskopischen Rotatorenmanschettenrekonstruktion (ARCR) sind im Allgemeinen gut, aber hinsichtlich der großen Schwankungsbreite der postoperativen Resultate noch verbesserungsfähig.

Fragestellung

Ziel dieser Literaturübersicht ist es, einen Überblick über prognostische Faktoren zu geben, die das postoperative Ergebnis nach ARCR beeinflussen.

Material und Methoden

Systematische Reviews, welche prognostische Faktoren für das Outcome nach ARCR analysieren, wurden in diese Übersichtsarbeit eingeschlossen. Die Literatursuche erfolgte in den Datenbanken Embase, Medline (Ovid) und Scopus. In die Auswertung wurden nur prognostischen Faktoren eingeschlossen, welche in mindestens zwei Übersichtsarbeiten beschrieben wurden.

Ergebnisse

Sieben systematische Reviews mit insgesamt 332 eingeschlossenen Artikeln wurden ausgewertet. Postoperative Ergebnisse waren Patientenzufriedenheit, Lebensqualität sowie funktionelle und strukturelle Ergebnisse. Sechzehn prognostische Faktoren wurden identifiziert und in patientenbezogene, rupturbezogene und behandlungsbezogene prognostische Faktoren untergliedert.

Schlussfolgerung

Anhand von patienten-, ruptur- und behandlungsbezogenen prognostischen Faktoren soll in Zukunft ein Vorhersagemodell erstellt werden können, um die individuellen Heilungschancen nach ARCR vorherzusagen und dem Patienten eine präzise Therapieempfehlung abgeben zu können.

Effect of Smoking on Postoperative Function and Quality of Life After Full Thickness Arthroscopic Rotator Cuff Repair: A Retrospective Analysis

PURPOSE

The effect of smoking on preoperative and postoperative outcome scores as well as quality of life measurements after arthroscopic rotator cuff repair (ARCR) has not been fully understood, and studies regarding this are lacking in the literature. This study aimed to evaluate the effect of smoking on function and quality of life after ARCR.

METHODS

Two-hundred patients who underwent full-thickness ARCR with a minimum 1-year follow-up period were included and evaluated retrospectively. The patients were divided into two groups: smokers (Group 1, 59 patients) and nonsmokers (Group 2, 141 patients). Pre- and postoperative Constant Murley (CM) scores, American Shoulder and Elbow Surgeons (ASES) scores, visual analogue scale scores (VASs), and Short-Form 36 health survey (SF-36) scores were used to evaluate functional and quality of life outcomes. The correlation between the smoking amount (pack-years) and outcomes was evaluated.

RESULTS

A total of 200 patients included into study (90 male and 110 female) with mean age of 62.68 ± 3.98. There was no statistically significant difference between the two groups regarding preoperative scores, except in the ASES score (P = 0.021 ) Additionally, there was a statistically significant difference between the groups regarding postoperative CM score, ASES score, and VAS, and in physical functioning and role limitations due to physical health domains of the SF-36 (P = 0.029, P = 0.038, P = 0.021 and P = 0.020, respectively). There were small to moderate negative correlations between amount of smoking and preoperative physical functioning, role limitations from emotional problems, energy/fatigue, emotional well-being, and pain domains of the SF-36. However, there were moderate to strong negative correlations between amount of smoking and postoperative SF-36 domains.

CONCLUSION

Preoperative and postoperative functional outcome scores, and quality of life measurements are negatively affected from smoking. As the amount of smoking increases, postoperative results are negatively affected.

LEVEL OF EVIDENCE

3.

Long-term follow-up of patients with a high critical shoulder angle and acromion index: is there an increased retear risk after arthroscopic supraspinatus tendon repair?

BACKGROUND

The effect of the acromion index (AI) and critical shoulder angle (CSA) on the short-term healing rate after arthroscopic repair of the supraspinatus tendons is already known. Long-term effects have not been published yet.

PURPOSE

Long-term evaluation of the effect of the AI and CSA on the postoperative healing rate and clinical results after arthroscopic repair of the supraspinatus tendon.

METHODS

Patients with a symptomatic, single-tendon, full-thickness supraspinatus tear in whom nonoperative management had failed were treated with an arthroscopic repair. Preoperative radiographs were used to measure CSA and AI. Eight years postoperatively, magnetic resonance imaging (MRI) studies were performed and evaluated on repair integrity. Patient-reported outcome measurements were collected pre- and postoperatively.

RESULTS

Thirty-one patients were evaluated 8 years postoperatively. The mean age at the time of surgery was 61 ± 9 years. MRI evaluation showed that 20 patients (65%) had an intact repair and 11 (35%) had a full-thickness retear. No significant differences were found between the intact and retear groups regarding age (P = .605), initial tear size (P = .485), retraction grade (P = .439), and all PROMs. The mean CSA for the intact group (33° ± 1°) was significantly lower than the CSA in the retear group (38° ± 1°; P = .004). Eighteen patients (58%) had a CSA ≥35°, and 9 (50%) among them had a retear and 9 (50%) had an intact repair.The mean AI for the intact group (0.72 ± 0.11) was significantly lower than the AI in the retear group (0.81 ± 0.08 ; P = .021). Seventeen patients (55%) had an AI ≥0.75, and 9 (53%) among them had a retear and 8 had an intact repair. If the AI was ≥0.75, the odds ratio of having a retear was 6.19 (P = .045). No progressive worsening of PROMs and clinical results could be demonstrated related to a higher CSA or AI during the entire follow-up.

CONCLUSION

At long-term follow-up, a higher CSA has the tendency to have an increased rate of retear after arthroscopic supraspinatus tendon repair, but this was not significant. A higher AI significantly increased the retear risk. A higher CSA and AI did not impair the clinical results over time. An AI ≥0.75 was associated with a 6-fold increase in risk of retear after arthroscopic supraspinatus tendon repair.

Assessment of Tendon Retraction in Large to Massive Rotator Cuff Tears: A Modified Patte Classification Based on 2 Coronal Sections on Preoperative Magnetic Resonance Imaging With Higher Specificity on Predicting Reparability

PURPOSE

To propose a modified Patte classification (evaluating tendon retraction on 2 coronal sections) and analyze whether this classification was better at predicting irreparability and retear of large to massive rotator cuff tears (RCTs).

METHODS

A retrospective study was performed. Imaging evaluation including tendon retraction, fatty infiltration, the acromiohumeral distance (AHD), and the tangent sign was performed using magnetic resonance imaging. The modified Patte classification was used to assess tendon retraction. Intraobserver and interobserver reliability was analyzed by calculating intraclass correlation coefficients. Factors affecting irreparability and retear were analyzed using both univariate and multivariate analyses. Sensitivity and specificity of tendon retraction to predict irreparability and retear were calculated.

RESULTS

A total of 121 shoulders with large to massive RCTs underwent arthroscopic rotator cuff repairs. The modified Patte classification system had excellent interobserver and intraobserver reliability. Several factors were associated with reparability and retear in the univariate analysis. However, in binary logistic regression analysis, the only factors affecting reparability were AHD less than 0.4 cm (P = .007) and modified Patte stage III tendon retraction (P = .023). Low-grade repair quality (P = .001) and modified Patte stage III tendon retraction (P = .031) were independent factors for retear. Modified Patte stage III had a high specificity for predicting irreparability (93.58%) and retear (98.78%), whereas the specificity of original Patte stage III was 76.15% and 84.15%, respectively.

CONCLUSIONS

For large to massive RCT repairs, modified Patte stage III tendon retraction with evaluation of 2 coronal cuts reveals higher specificity on predicting tendon irreparability and postoperative retear. An AHD less than 0.4 cm on magnetic resonance imaging and modified Patte stage III tendon retraction were independent risk factors for irreparability. Low-grade repair quality and modified Patte stage III tendon retraction were independent risk factors for postoperative retear.

LEVEL OF EVIDENCE

Level III, case-control study.

Duration of Surgery and Learning Curve Affect Rotator Cuff Repair Retear Rates: A Post Hoc Analysis of 1600 Cases

Background:

Arthroscopic rotator cuff repair can be quite complex and time consuming, particularly early in the surgeon’s learning curve.

Hypothesis:

Patients who have undergone rotator cuff repair with shorter operative times will be less likely to have a rotator cuff retear at 6 months postoperatively.

Study Design:

Case-control study; Level of evidence, 3.

Methods:

This study was an analysis of data from 1600 consecutive patients (670 partial-thickness and 930 full-thickness tears) who had rotator cuff repair performed by a single surgeon utilizing an arthroscopic, single-row, knotless inverted mattress suture anchor technique. All patients underwent ultrasound at 6 months postoperatively to determine repair integrity. Moving average analysis was performed for the variables of operative time and case number to evaluate the surgeon’s learning curve.

Results:

For early cases, the mean operative time was approximately 35 minutes. After approximately 450 cases, the operative time plateaued at approximately 20 minutes. The mean operative time for the cohort (±SEM) was 22 ± 0.3 minutes, and the mean retear rate was 13%. Increased operative time was associated with a retear (r = 0.18; P < .001). Multiple logistic regression analysis revealed that the variables with the most independent effect on retears were larger tear size (Wald statistic = 36; P < .001), lower case number (ie, less surgeon experience) (Wald statistic = 28; P < .001), older patient age (Wald statistic = 23; P < .001), full-thickness tears (Wald statistic = 13; P < .001), and lower surgeon-rated repair quality (Wald statistic = 8; P = .004). Operative time was not a significant independent factor contributing to retears.

Conclusion:

Operative time and rotator cuff retear rates decreased as surgical team experience increased. The hypothesis of this study, however, was not supported. The reduced retear rate was not related to a reduction in operative time per se but rather to improved surgical team experience and patient factors, such as improved healing with smaller tears in younger patients.

Preoperative Lymphocyte to Monocyte Ratio Can Be a Prognostic Factor in Arthroscopic Repair of Small to Large Rotator Cuff Tears

BACKGROUND

Complete arthroscopic repair can treat small to large rotator cuff tears (RCTs) with good outcomes; however, the repair might be compromised by inflammation.

PURPOSE

To investigate the prognostic value of preoperative lymphocyte to monocyte ratio (LMR), a marker of systemic inflammation before surgery, in arthroscopic rotator cuff repair.

STUDY DESIGN

Case-control study; Level of evidence, 3.

METHODS

Between January 2014 and January 2016, primary small to large RCTs without stiffness, significant muscle fatty infiltration, or atrophy were completely repaired in 110 consecutive patients and followed. Preoperative LMR was obtained from blood routinely examined 1 day before surgery. Descriptive data and pre- and intraoperative variables were collected. Correlation analysis and multivariable linear regression analysis were used to determine the relationship between preoperative LMR and recovery including American Shoulder and Elbow Surgeons (ASES) score, Constant-Murley score, Fudan University Shoulder Score (FUSS), visual analog scale (VAS) score for pain, and range of motion (ROM). Poor recovery was defined as ASES score <80, shoulder stiffness as external rotation ≤20°, and pain as VAS score >3. The predictive value of preoperative LMR was determined by receiver operating characteristic (ROC) curve.

RESULTS

A total of 99 patients (101 shoulders) were followed for 2.88 ± 0.43 years. Overall, mean ASES, Constant-Murley, FUSS, and VAS scores were significantly improved at the final follow-up; however, 27 cases had either ASES <80, shoulder stiffness, pain, or a combination of these. Correlation analysis and multivariable linear analysis showed that preoperative LMR was the only factor independently associated with functional recovery, pain, and ROM. Patients with poor recovery had lower preoperative LMR than those with good recovery. Based on the ROC curve, the cutoff value of preoperative LMR was 4.760. Patients with preoperative LMR <4.760 had significantly inferior clinical outcomes compared with their counterparts. The corresponding specificity was 0.542, and sensitivity was 0.779.

CONCLUSION

Arthroscopic repair for small to large RCTs yielded good outcomes; however, some patients still had inferior functional scores, shoulder stiffness, or pain, which correlated with the level of preoperative systemic inflammation. As a marker of systemic inflammation, preoperative LMR could be prognostic for rotator cuff repair.

The impact of workers' compensation on recovery after biceps tenodesis

BACKGROUND

There remains a paucity of studies examining the impact of workers' compensation (WC) on a variety of outcomes after biceps tenodesis. The purpose of this study was to compare the postoperative recovery curves after biceps tenodesis in patients with and without WC claims.

METHODS

Using the Surgical Outcomes System database, we assessed the postoperative recovery outcomes of all patients who had outcomes recorded at least 6 months after isolated biceps tenodesis for the treatment of a diagnosis of biceps tendinitis, stratified by WC status. The outcomes analyzed included visual analog scale, American Shoulder and Elbow Surgeons, VR-12 (Veterans RAND 12 Item Health Survey) mental and physical, Simple Shoulder Test, and Single Assessment Numeric Evaluation scores.

RESULTS

Overall, 139 patients with WC claims underwent isolated biceps tenodesis vs. 786 patients without WC claims. Demographic characteristics and comorbidities were similar in the 2 groups. Patients without WC claims had significantly improved visual analog scale, VR-12, American Shoulder and Elbow Surgeons, Single Assessment Numeric Evaluation, and Simple Shoulder Test scores at all times points after 3 months and 1 year compared with patients with WC claims.

CONCLUSIONS

On analysis of patients' recovery after isolated biceps tenodesis, WC claims led to significantly worse pain and functional outcomes at every time point of analysis (3, 6, 12, and 24 months). Furthermore, patients with WC claims had worse preoperative-to-postoperative improvements in most outcomes. This information can be used to educate surgeons and patients on postoperative expectations, as well as to perform analyses focused on health economics, value, and policy.

Do patients who smoke tobacco have success with primary arthroscopic rotator cuff repair? A comparison with nonsmokers

BACKGROUND

It is recommended that patients cease smoking before rotator cuff repair. However, not all patients want to or are able to successfully cease smoking. This raises the question if these patients should be advised to pursue surgical intervention or if surgery should be contraindicated until patients successfully cease smoking.

METHODS

A retrospective analysis of patients undergoing rotator cuff repair was performed to examine the effects of smoking tobacco on patient-determined outcomes (Western Ontario Rotator Cuff Index [WORC], American Shoulder and Elbow Surgeons score [ASES], Simple Shoulder Test [SST], and Single Assessment Numeric Evaluation [SANE]). Patients who smoked tobacco at the time of surgery were compared with patients who were not smoking to determine if differences in (1) severity of preoperative and postoperative symptoms and (2) the postoperative improvements were statistically significant.

RESULTS

Thirty-one patients were smokers and 205 were nonsmokers. Preoperative scores were worse for smokers compared with nonsmokers: WORC (32 vs. 43; P = .0002), ASES (32 vs. 43; P = .001), SST (3.5 vs. 4.6; P = .04), and SANE (34 vs. 38; P = .35). Postoperative scores were worse for smokers compared with nonsmokers: WORC (79 vs. 89; P = .001), ASES (82 vs. 89; P = .04), SST (9.0 vs. 10.2; P = .02), and SANE (84 vs. 89; P = .09). There were no significant differences in change in scores over time or percentage of patients achieving the minimal clinically important difference of the score between groups.

CONCLUSIONS

From examining the patients' subjective patient-determined outcome scores, it does not appear that rotator cuff repair should be strictly contraindicated in active smokers. Postoperative improvements in smokers were similar to nonsmokers. Smokers have lower baseline preoperative and postoperative outcome scores compared with nonsmokers.

Factors Related to Symptomatic Failed Rotator Cuff Repair Leading to Revision Surgeries After Primary Arthroscopic Surgery

PURPOSE

To evaluate the clinical characteristics of patients with symptomatic failed rotator cuff repair who required revision surgeries and to identify clinical and radiologic factors related to the need for revision surgery.

METHODS

Ninety-eight patients who were diagnosed with rotator cuff retear within 2 years after primary arthroscopic surgery were included. Patients were divided into 2 groups: patients who underwent revision surgery within 2 years postoperatively (44 patients, group I) and patients who did not require additional treatment due to minimal discomfort during the same period (54 patients, group II). Demographic and radiographic factors related to cuff healing were analyzed. Univariate and multivariate analyses were performed to evaluate factors related to revision surgery.

RESULTS

Group I showed significantly inferior clinical outcomes at the time of revision compared to group II (American Shoulder and Elbow Surgeons score; 54.0 ± 12.1 vs 86.5 ± 12.2, Constant score; 65.2 ± 10.8 vs 84.0 ± 11.4, P < .001). Total cholesterol level (210.2 ± 40.0 vs 189.7 ± 39.1, P = .012), low-density lipoprotein level (130.7 ± 28.7 vs 115.5 ± 26.9, P = .008), and fatty infiltration of the infraspinatus (20.5% vs 3.7%, P = .011) were significantly greater in group I than in group II. On postoperative magnetic resonance imaging, retear of the infraspinatus tendon occurred significantly more frequently in group I (81.8%) than in group II (37.0%, P < .001). In group I, relative changes in anteroposterior (AP) (19.2 ± 37.8) and mediolateral retear size (29.6 ± 90.7) were significantly greater than in group II (AP; -39.5 ± 19.2, mediolateral; -29.2 ± 26.8, P < .001). Relative change in AP retear size was the most powerful independent predictor of symptomatic failed rotator cuff repair (odds ratio 1.19, confidence interval 1.08-1.31, P < .001).

CONCLUSIONS

Preoperative serum total cholesterol level, low-density lipoprotein levels, and fatty infiltration of the infraspinatus were significantly related to symptomatic failed rotator cuff repair. Relative change in AP retear size was the most powerful independent predictor of symptomatic failed rotator cuff repair.

LEVEL OF EVIDENCE

Level III, Case-control study.

Predictive Modeling to Determine Functional Outcomes After Arthroscopic Rotator Cuff Repair

BACKGROUND

Arthroscopic rotator cuff repair (ARCR) is one of the most commonly performed orthopaedic surgical procedures; however, patient-reported outcomes have varied greatly in the literature.

PURPOSE

To identify preoperative factors that affect outcomes and to develop prognostic tools for predicting functional outcomes in future ARCR cases.

STUDY DESIGN

Cohort study; Level of evidence, 3.

METHODS

Patients were included who underwent ARCR for repairable full-thickness rotator cuff tears with at least 2 years of follow-up. Twelve predictors were entered as candidate predictors in each model: age, sex, workers' compensation (WC) status, previous cuff repair, tear size, tear shape, multiple-tendon involvement, tendon stump length, Goutallier classification, critical shoulder angle, length of follow-up, and baseline subjective outcomes score. Postoperative American Shoulder and Elbow Surgeons (ASES), 12-Item Short Form Health Survey Physical Component Summary (SF-12 PCS), QuickDASH (short version of Disabilities of the Arm, Shoulder and Hand), and patient satisfaction were each modeled through proportional odds ordinal logistic regression. Model results were presented with marginal covariate effect plots and predictive nomograms.

RESULTS

Overall, 552 shoulders fit inclusion criteria. The mean age at surgery was 60.2 years (range, 23-81 years). Twenty-five (4.5%) shoulders underwent revision cuff repair or reverse arthroplasty at a mean 1.9 years (range, 0.1-7.9 years) postoperatively. Overall, 509 shoulders were eligible for follow-up, and minimum 2-year postoperative patient-reported outcomes were obtained for 449 (88.2%) at a mean 4.8 years (range, 2-11 years). The ASES score demonstrated significant improvement from pre- to postoperative median (interquartile range): 58 (44.9-71.6) to 98.3 (89.9-100; P < .001). Women demonstrated significantly higher 2-year reoperation rates than men (5.8% vs 1.6%; odds ratio, 2.8 [95% CI, 0.73-9.6]; P = .023). Independently significant predictors for lower postoperative ASES scores included previous ARCR (P < .001), female sex (P < .001), and a WC claim (P < .001). Significant predictors for worse QuickDASH scores included WC claim (P < .001), female sex (P < .001), previous ARCR (P = .007), and ≥7 years of follow-up time. Significant predictors for lower SF-12 PCS scores included WC claim (P < .001), female sex (P = .001), and lower baseline SF-12 PCS. Last, significant independent predictors of patient satisfaction included previous ARCR (P = .004), WC claim (P = .011), female sex (P = .041), and age (P = .041).

CONCLUSION

Excellent clinical outcomes and low failure rates were obtained after ARCR by using careful patient selection and modern surgical techniques for ARCR. Female sex, WC claim, and previous ARCR were significant predictors of poorer outcomes in at least 3 patient-reported outcome models. Prognostic nomograms were developed to aid in future patient selection, clinical decision making, and patient education.

Contrast-Enhanced Ultrasound (CEUS) as Predictor for Early Retear and Functional Outcome After Supraspinatus Tendon Repair

Supraspinatus (SSP) tendon tears represent a common indication for shoulder surgery. Yet, prediction of postoperative function and tendon retear remains challenging and primarily relies on morphologic magnetic resonance imaging (MRI)-based parameters, supported by patients' demographic data like age, gender, and comorbidities. Considering continuously high retear rates, especially in patients with larger tears and negative prognostic factors, improved outcome prediction could be of high clinical value. Contrast-enhanced ultrasound (CEUS) enables an assessment of dynamic perfusion of the SSP muscle. As a potential surrogate for muscle vitality, CEUS might reflect functional properties of the SSP and support improved outcome prediction after tendon repair. Fifty patients with isolated SSP tendon tears were prospectively enrolled. Preoperatively, SSP muscle perfusion was quantified by CEUS and conventional morphologic parameters like tear size, fatty infiltration, and tendon retraction were assessed by MRI. At six months follow-up, shoulder function, tendon integrity, and muscle perfusion were reassessed. The predictive value of preoperative CEUS for postoperative shoulder function and tendon integrity was evaluated. 35 patients entered the statistical analysis. Preoperative CEUS-based assessment of SSP perfusion significantly correlated with early postoperative shoulder function (Constant, r = 0.48, p < 0.018) and tendon retear (r = 0.67, p < 0.001). CEUS-based subgroup analysis identified patients with exceptionally high, respectively low risk for tendon retear. CEUS-based assessment of the SSP seemed to predict early shoulder function and tendon retear after SSP repair and allowed to identify patient subgroups with exceptionally high or low risk for tendon retear. © 2019 The Authors. Journal of Orthopaedic Research® published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 38:1150-1158, 2020.

Surgical or nonsurgical treatment for nontraumatic rotator cuff tears: Study protocol clinical trial

BACKGROUND

The optimal treatment for symptomatic, nontraumatic rotator cuff tear is unknown. The primary aim of this randomized controlled trial is to compare functional improvement after surgical and conservative treatment of nontraumatic rotator cuff tears.

METHODS

This is a single-centre, randomized clinical trial with a follow-up of 12 months. Patients older than 18 years with magnetic resonance imaging - confirmed nontraumatic rotator cuff tears that are suitable for either surgery or nonsurgery treatment is enrolled. The primary outcome is Constant score. Secondary outcome measures include visual analog scale (VAS) score, patient satisfaction, and American Shoulder and Elbow Surgeons (ASES) score. All scores are assessed by an independent observer who is blinded to the allocation of groups.

RESULTS

The study will provide much needed data on surgical vs nonsurgical treatment for nontraumatic rotator cuff tears. Results of this study may help patients, clinicians, and policy makers assess the pivotal question on comparative effectiveness of surgery vs nonsurgical for rotator cuff tears.

TRIAL REGISTRATION

This study protocol was registered in Research Registry (researchregistry5442).

Surgery for rotator cuff tears

BACKGROUND

This review is one in a series of Cochrane Reviews of interventions for shoulder disorders.

OBJECTIVES

To synthesise the available evidence regarding the benefits and harms of rotator cuff repair with or without subacromial decompression in the treatment of rotator cuff tears of the shoulder.

SEARCH METHODS

We searched the CENTRAL, MEDLINE, Embase, Clinicaltrials.gov and WHO ICRTP registry unrestricted by date or language until 8 January 2019.

SELECTION CRITERIA

Randomised controlled trials (RCTs) including adults with full-thickness rotator cuff tears and assessing the effect of rotator cuff repair compared to placebo, no treatment, or any other treatment were included. As there were no trials comparing surgery with placebo, the primary comparison was rotator cuff repair with or without subacromial decompression versus non-operative treatment (exercises with or without glucocorticoid injection). Other comparisons were rotator cuff repair and acromioplasty versus rotator cuff repair alone, and rotator cuff repair and subacromial decompression versus subacromial decompression alone. Major outcomes were mean pain, shoulder function, quality of life, participant-rated global assessment of treatment success, adverse events and serious adverse events. The primary endpoint for this review was one year.

DATA COLLECTION AND ANALYSIS

We used standard methodologic procedures expected by Cochrane.

MAIN RESULTS

We included nine trials with 1007 participants. Three trials compared rotator cuff repair with subacromial decompression followed by exercises with exercise alone. These trials included 339 participants with full-thickness rotator cuff tears diagnosed with magnetic resonance imaging (MRI) or ultrasound examination. One of the three trials also provided up to three glucocorticoid injections in the exercise group. All surgery groups received tendon repair with subacromial decompression and the postoperative exercises were similar to the exercises provided for the non-operative groups. Five trials (526 participants) compared repair with acromioplasty versus repair alone; and one trial (142 participants) compared repair with subacromial decompression versus subacromial decompression alone. The mean age of trial participants ranged between 56 and 68 years, and females comprised 29% to 56% of the participants. Symptom duration varied from a mean of 10 months up to 28 months. Two trials excluded tears with traumatic onset of symptoms. One trial defined a minimum duration of symptoms of six months and required a trial of conservative therapy before inclusion. The trials included mainly repairable full-thickness supraspinatus tears, six trials specifically excluded tears involving the subscapularis tendon. All trials were at risk of bias for several criteria, most notably due to lack of participant and personnel blinding, but also for other reasons such as unclearly reported methods of random sequence generation or allocation concealment (six trials), incomplete outcome data (three trials), selective reporting (six trials), and other biases (six trials). Our main comparison was subacromial decompression versus non-operative treatment and results are reported for the 12 month follow up. At one year, moderate-certainty evidence (downgraded for bias) from 3 trials with 258 participants indicates that surgery probably provides little or no improvement in pain; mean pain (range 0 to 10, higher scores indicate more pain) was 1.6 points with non-operative treatment and 0.87 points better (0.43 better to 1.30 better) with surgery.. Mean function (zero to 100, higher score indicating better outcome) was 72 points with non-operative treatment and 6 points better (2.43 better to 9.54 better) with surgery (3 trials; 269 participants), low-certainty evidence (downgraded for bias and imprecision). Participant-rated global success rate was 873/1000 after non-operative treatment and 943/1000 after surgery corresponding to (risk ratio (RR) 1.08, 95% confidence interval (CI) 0.96 to 1.22; low-certainty evidence (downgraded for bias and imprecision). Health-related quality of life was 57.5 points (SF-36 mental component score, 0 to 100, higher score indicating better quality of life) with non-operative treatment and 1.3 points worse (4.5 worse to 1.9 better) with surgery (1 trial; 103 participants), low-certainty evidence (downgraded for bias and imprecision). We were unable to estimate the risk of adverse events and serious adverse events as only one event was reported across the trials (very low-certainty evidence; downgraded once due to bias and twice due to very serious imprecision).

AUTHORS' CONCLUSIONS

At the moment, we are uncertain whether rotator cuff repair surgery provides clinically meaningful benefits to people with symptomatic tears; it may provide little or no clinically important benefits with respect to pain, function, overall quality of life or participant-rated global assessment of treatment success when compared with non-operative treatment. Surgery may not improve shoulder pain or function compared with exercises, with or without glucocorticoid injections. The trials included have methodology concerns and none included a placebo control. They included participants with mostly small degenerative tears involving the supraspinatus tendon and the conclusions of this review may not be applicable to traumatic tears, large tears involving the subscapularis tendon or young people. Furthermore, the trials did not assess if surgery could prevent arthritic changes in long-term follow-up. Further well-designed trials in this area that include a placebo-surgery control group and long follow-up are needed to further increase certainty about the effects of surgery for rotator cuff tears.

Preoperative Mental Health Scores and Achieving Patient Acceptable Symptom State Are Predictive of Return to Work After Arthroscopic Rotator Cuff Repair

Background:

The incidence of rotator cuff repairs has risen dramatically over the past 10 years, most notably in the working-class population. Return to work (RTW) is a valuable outcome measure to set patient expectations before surgery.

Purpose:

To establish the rate of RTW after rotator cuff repair with respect to stratified levels of occupational demand (sedentary, light, moderate, and heavy) and to identify clinical factors significantly associated with postoperative RTW.

Study Design:

Cohort study; Level of evidence, 3.

Methods:

Patients who received rotator cuff repair between 2014 and 2017 were queried from a prospectively maintained institutional registry. Work status was evaluated from clinical and physical therapy notes, and RTW was stratified based on duty level. The minimal clinically important difference (MCID), substantial clinical benefit (SCB), and patient acceptable symptom state (PASS) values were calculated for American Shoulder and Elbow Surgeons (ASES) score and subjective Constant score through use of an anchor-based approach. Patient demographic factors, preoperative ASES scores, Constant scores, and health-related quality of life scores, as well as change in postoperative scores exceeding the thresholds for MCID, SCB, and PASS, were analyzed to determine significant associations with RTW without restriction.

Results:

In total, 89 patients with documented pre- and postoperative work status underwent surgery. Rates of RTW for sedentary, light, moderate, and heavy duties were 100%, 84.0%, 77.4%, and 63.3%, respectively, within return at less than 7 postoperative months on average. RTW was associated with achieving PASS (P = .004) but not achieving MCID and SCB (P = .429 and .452, respectively). Injury to a patient’s dominant side had reduced odds (0.057; 95% CI, 0.004-0.763; P = .030) for RTW at full duty. Tear characteristics and type of insurance were not associated with RTW. Preoperative Veterans RAND Mental Component Score (>53.3; area under the curve, 70.4%) was predictive of returning to work.

Conclusion:

A vast majority of patients undergoing rotator cuff repair can expect to return to work within 8 months of surgery. Preoperative mental health scores can predict future return to work, which supports the concept that mental health status plays an important role in the outcomes after rotator cuff repair surgery.

Do patients receiving workers' compensation who undergo arthroscopic rotator cuff repair have worse outcomes than non-recipients? Retrospective case-control study

PURPOSE

We compared preoperative and postoperative measures among workers' compensation board (WCB) recipients and non-recipients and determined the impact of WCB receipt on the 1- and 2-year outcomes of rotator cuff repair.

METHODS

We retrospectively reviewed patients with full-thickness rotator cuff tears who underwent arthroscopic repair between September 2011 and September 2014. Patients were divided into two groups based on WCB status: WCB recipients and non-recipients. All patients returned for follow-up functional evaluations at 1 and 2 years after the operation. Four outcome measures were evaluated: visual analog scale (VAS) pain score, American Shoulder and Elbow Surgeons (ASES) score, the Shoulder Rating Scale of the University of California at Los Angeles (UCLA), and range of motion (ROM).

RESULTS

Seventy patients (38 males, 32 females) were evaluated, 20 of whom were WCB recipients. At 1 year after the operation, ASES, UCLA, and VAS scores as well as abduction ROM (Abd-ROM) had improved significantly in both groups. However, non-recipients showed significantly greater improvement than did WCB recipients in ASES, UCLA, and VAS scores and in forward flexion ROM and Abd-ROM ( p = 0.000, 0.009, 0.002, 0.046, and 0.020, respectively). However, at 2 years after the operation (after the end of WCB), there were no significant differences in any clinical outcome between WCB recipients and non-recipients ( p = 0.057, 0.106, 0.075, 0.724, and 0.787, respectively).

CONCLUSION

Although workers' compensation recipients who underwent arthroscopic rotator cuff repair had worse outcomes while receiving WCB benefits, the outcomes were similar after WCB benefits ended.

Outcomes of expedited rotator cuff surgery in injured workers: Impact of pathology on readiness for return to work

OBJECTIVES

The objectives of this study were to (1) examine the overall recovery and satisfaction following an expedited rotator cuff (RC) decompression or repair at 3-6 months and (2) explore group differences (repair vs. decompression) in demographics, clinical, disability, and psychosocial factors.

METHODS

This was a prospective longitudinal study of injured workers whose surgery was expedited. The outcome measures were Quick disabilities of the arm, shoulder, and hand ( QuickDASH), the Hospital Anxiety and Depression Scale (HADS), the readiness for return to work (RRTW) scale, and satisfaction with surgery and overall recovery.

RESULTS

Of 118 patients participated in the study, 106 patients, age: 51 (9), 71 males (67%) completed the study. Sixty-four (60%) patients underwent a RC repair and 42 (40%) had RC decompression. Patients improved on average in QuickDASH ( p = 0.004), anxiety ( p = 0.003), and depression scores ( p = 0.004). The majority of patients (75%) were satisfied with surgery. In the decompression group, the pre-contemplation (PC) stage of the RRTW which documents the absence of desire or planning for return to work in the non-working sample ( r = 0.81, p = 0.008) and the uncertain maintenance (UM) stage of the RRTW which explores the worker's struggle to stay at work in the working sample correlated with physical disability as measured by the QuickDASH scores ( r = 0.62, p = 0.0001). In the repair group, the above domains correlated with the depression HADS scores (PC: r = 0.64, p = 0.001 and UM: r = 0.57, p < 0.0001).

CONCLUSION

Expedited RC surgery improved physical disability and mental well-being and was associated with a relatively high satisfaction at a maximum of 6 months. The poorer report of readiness for return to work was associated with higher physical disability in the decompression group and higher report of depression in the repair group. These differential associations may emphasize the importance of physical versus psychological management in patients with different levels of pathology.

The Impact of Workers' Compensation on Patient-Reported Outcomes Measurement Information System Upper Extremity and Legacy Outcome Measures in Patients Undergoing Arthroscopic Rotator Cuff Repair

PURPOSE

To examine the preoperative performance of the Patient-Reported Outcomes Measurement Information System (PROMIS) Upper Extremity (UE) Computer Adaptive Test (CAT) with respect to legacy scores in patients receiving rotator cuff repair (RCR). In addition, to define the impact of Workers' Compensation (WC) status on both performance and floor and ceiling effects.

METHODS

The PROMIS UE CAT was administered preoperatively alongside legacy patient-reported outcome measures (PROMs) to patients undergoing isolated arthroscopic RCR from November 2017 to September 2018. Performance was assessed using Spearman correlation coefficients, and floor and ceiling effects were examined.

RESULTS

One hundred twenty-two patients (WC, n = 32; non-WC, n = 90; 62.3% male, 53.6 ± 11.5 years) were included. PROMs assessing physical function (r = 0.41-0.77) correlated more strongly to the PROMIS UE CAT than did multidomain or mental health PROMs (r = 0.25-0.61). In WC patients, the PROMIS UE CAT demonstrated diminished correlative strength relative to shoulder function PROMs. WC patients also demonstrated relative floor effects for Single Assessment Numerical Evaluation (SANE; 18.8%) and Constant-Murley (15.6%) and relative ceiling effects for the Brief Resilience Scale (53.1%), Short Form 12 Mental Component Score (50%), and Veterans Rand 12 Mental Component Score (53.1%) and were more likely to report the minimum SANE score (P < .01) and the maximum Brief Resilience Scale score (P < .01). No absolute or relative floor/ceiling effects for the PROMIS UE CAT were found.

CONCLUSIONS

Compared with a non-WC cohort, WC patients have significantly lower preoperative PROMIS UE CAT scores, are more likely to report the absolute minimum and maximum scores for various PROMs, and demonstrated relative floor and ceiling effects for PROMs assessing mental health. The absence of significant floor/ceiling effects for the PROMIS UE CAT may suggest improved outcome discrimination and may support the adoption of PROMIS UE for the assessment of functional status in WC patients with rotator cuff pathology.

LEVEL OF EVIDENCE

Level III, retrospective comparative trial.

Short-term results (1 year) of vented versus solid polyetheretherketone anchors in treatment of rotator cuff tears

BACKGROUND

Due to the rotator cuff retear after being surgically repaired, some strategies have been developed. The authors verified that the possibility of polyetheretherketone (PEEK) vented anchors promoted a better clinical and healing process than PEEK solid anchors.

METHODS

A prospective and randomized study was designed with 38 patients treated with PEEK anchors, 18 of whom with vented anchors and 20 with solid ones. Demographic, clinical and radiologic data were collected before and during surgery (time 0) and at 12 months of follow-up.

RESULTS

In the final follow-up (12 months), there was no difference in the visual analogic scale (VAS) scale between groups (1.7 points vs 1.9 points; p = 0.731), neither in the DASH score (34.2 points vs 23.9 points; p = 0.268), nor in absolute Constant score (76.9 points vs 77.3 points; p = 0.910). In MRI, 10 patients had their cuff tear healed in the vented group and 15 in the solid group (p = 0.173).

CONCLUSION

The new designed vented anchors do not add any advantage when compared to solids ones, at least within the first year after surgery.

Long-term Results of Arthroscopic Rotator Cuff Repair: Initial Tear Size Matters: A Prospective Study on Clinical and Radiological Results at a Minimum Follow-up of 10 Years

BACKGROUND

Arthroscopic techniques are now considered the gold standard for treatment of most rotator cuff (RC) tears; however, no consensus exists on the maintenance of results over time, and long-term follow-up data have been reported for few cohorts of patients.

PURPOSE

To present the long-term results associated with the arthroscopic treatment of RC tears and to evaluate associations between preoperative factors and RC integrity at final follow-up.

STUDY DESIGN

Cohort study; Level of evidence, 3.

METHODS

A total of 169 patients were contacted at least 10 years after arthroscopic RC surgery and were invited to a clinical evaluation. Information on preoperative conditions, tear size, subjective satisfaction, and functional scores was collected; isometric strength and range of motion were also measured; and each patient underwent an ultrasound examination to evaluate supraspinatus integrity and a shoulder radiograph to evaluate osteoarthritis.

RESULTS

A total of 149 patients (88.2% of the eligible patients) were available for a complete telephonic interview, and 102 patients were available for the final evaluation. Ultrasound revealed an intact supraspinatus in 54 patients (53.47%). By adding the 10 patients who underwent revision surgery to the nonintact group, this percentage would drop to 48.65%. Tear size was associated with supraspinatus integrity in univariate analysis (hazard ratio, 3.04; 95% CI, 1.63-5.69; P = .001) and multivariable analysis (hazard ratio, 2.18; 95% CI, 1.03-4.62; P = .04). However, no significant differences were encountered in the subjective and functional scores collected, with the exception of the Constant-Murley Score, which was significantly higher in patients with smaller tears at the index procedure. Strength testing also revealed significantly superior abduction and flexion strength in this group, and radiographs showed a significantly higher acromion-humeral distance and lower grades of osteoarthritis. Patients with an intact supraspinatus at final follow-up showed superior results in all functional scores, greater satisfaction, superior abduction and flexion strength, higher acromion-humeral distance, and lower grades of osteoarthritis.

CONCLUSION

RC tear size at the time of surgery significantly affects supraspinatus integrity at a minimum follow-up of 10 years. However, a larger tear is not associated with an inferior subjective result, although it negatively influences abduction and flexion strength, range of motion, and osteoarthritis progression. Intraoperative efforts to obtain a durable RC repair are encouraged, since supraspinatus integrity at final follow-up influences clinical and functional outcomes, patient satisfaction, and osteoarthritis progression.

Which patients are less likely to improve after arthroscopic rotator cuff repair?

OBJECTIVE

The aim of this study was to evaluate which specific factors influence the improvement in function and to estimate the time to obtain pain relief following arthroscopic rotator cuff repair.

METHODS

A total of 97 patients (57 men and 40 women; mean age: 55.5 ± 9.3 years) who had arthroscopic rotator cuff repair between 2013 and 2016 were included into the study. Multivariable stepwise analysis included preoperative variables (age, gender, body mass index, comorbidities, occupation and participation in sports, Oxford shoulder score at baseline, preceding injury and duration of preoperative symptoms) and arthroscopic findings (size of rotator cuff tear, pathology of the long head of the biceps and cartilage lesions). The change in the Oxford shoulder score at the last follow-up was modeled as a function of the above predictor variables. The time to regain a visual analogue scale (VAS) under two points following surgery was considered the time to regain substantial pain relief.

RESULTS

The mean follow-up time was 33.2 ± 14.4 months. Twenty three patients had partial thickness and seventy four had full thickness supraspinatus tears. In third of the patients the tears were defined as large full thickness. At the last follow-up the mean Oxford shoulder score improved from 13.8 ± 4.8 to 42.1 ± 7.2 points (P < 0.001). The mean VAS improved from a preoperative score of 6.7 ± 1.3 points to 1.5 ± 0.6 points postoperatively (P < 0.001) and 80 (83%) patients declared they were satisfied to have had the operation. The mean time interval for substantial pain relief was 4.9 ± 3.6 months. Patients with higher preoperative Oxford shoulder score and larger tear size were correlated with lesser improvement in Oxford shoulder score (R = 0.5, P = 0.001).

CONCLUSION

Arthroscopic rotator cuff repair improved pain and function at an average follow-up of three years. A substantial pain relief was regained within five months from surgery. Larger rotator cuff tear size and more favorable preoperative function were predictors of worse postoperative function.

LEVEL OF EVIDENCE

Level IV, Therapeutic study.

The WORC Index and Predicting Treatment Failure in Patients Undergoing Primary Arthroscopic Rotator Cuff Repair

Background:

Rotator cuff tears are common injuries that are reliably treated with arthroscopic repair, producing good to excellent results. The Western Ontario Rotator Cuff (WORC) index is a validated disease-specific instrument used to assess patient outcomes; however, no study to date has correlated WORC index with treatment failure.

Purpose:

To evaluate the WORC index as a predictor for successful treatment in arthroscopic rotator cuff repair. An additional purpose was to identify patient and tear characteristics associated with risk of treatment failure.

Study Design:

Case-control study; Level of evidence, 3.

Methods:

This study reviewed a total of 500 patients who underwent arthroscopic rotator cuff repair with a minimum of 2-year follow-up. Patient charts were reviewed for treatment failures, defined as persistent or recurrent shoulder pain or weakness, leading to further workup and identification of a failure to heal or recurrent tear by magnetic resonance imaging. Patient demographic and comorbidity data were gathered and correlated with risk of failure. All patients completed WORC questionnaires, and scores were correlated with risk of treatment failure.

Results:

There were 28 (5.6%) treatment failures at a median 28 weeks (SD, 42 weeks) postoperatively. Patients claiming workers’ compensation were 3.21 times more likely (odds ratio; P = .018) to fail treatment. Posterior interval tears (those including infraspinatus) were 3.14 times more likely (P = .01) to fail than anterior interval tears. Tear size was associated with treatment failure; the odds of failure was 3.24 for a 2-tendon tear and 5.83 for a 3-tendon tear (P = .03). Tears involving the nondominant arm were associated with an increased risk of failure by a factor of 3.04 (95% CI, 1.01-9.11; P = .047). A WORC score ≥80 was associated with a 95% probability of treatment success at 1 year.

Conclusion:

After arthroscopic rotator cuff repair, patients with WORC scores ≥80 at 1 year have a 95% probability of successful treatment and likely do not benefit from continued follow-up visits. Furthermore, several risk factors were identified that may influence outcomes after rotator cuff repair, including workers’ compensation, location of tear, tear size, and hand dominance.

Cost-effectiveness and satisfaction following arthroscopic rotator cuff repair: does age matter?

AIMS

The aim of this study was to investigate the influence of age on the cost-effectiveness of arthroscopic rotator cuff repair.

PATIENTS AND METHODS

A total of 112 patients were prospectively monitored for two years after arthroscopic rotator cuff repair using the Disabilities of the Arm, Shoulder and Hand questionnaire (DASH), the Oxford Shoulder Score (OSS), and the EuroQol five-dimension questionnaire (EQ-5D). Complications and use of healthcare resources were recorded. The incremental cost-effectiveness ratio (ICER) was used to express the cost per quality-adjusted life-year (QALY). Propensity score-matching was used to compare those aged below and above 65 years of age. Satisfaction was determined using the Net Promoter Score (NPS). Linear regression was used to identify variables that influenced the outcome at two years postoperatively.

RESULTS

A total of 92 patients (82.1%) completed the follow-up. Their mean age was 59.5 years (sd 9.7, 41 to 78). There were significant improvements in the mean DASH (preoperative 47.6 vs one-year 15.3; p < 0.001) and OSS scores (26.5 vs 40.5; p < 0.001). Functional improvements were maintained with no significant change between one and two years postoperatively. The mean preoperative EQ-5D was 0.54 increasing to 0.81 at one year (p < 0.001) and maintained at 0.86, two years postoperatively. There was no significant difference between those aged below or above 65 years of age with regards to postoperative shoulder function or EQ-5D gains. Smoking was the only characteristic that significantly adversely influenced the EQ-5D at two years postoperatively (p = 0.005). A total of 87 were promoters and five were passive, giving a mean NPS of 95 (87/92). The total mean cost per patient was £3646.94 and the mean EQ-5D difference at one year was 0.2691, giving a mean ICER of £13 552.36/QALY. At two years, this decreased further to £5694.78/QALY. This was comparable for those aged below or above 65 years of age (£5209.91 vs £5525.67). Smokers had an ICER that was four times more expensive.

CONCLUSION

Arthroscopic rotator cuff repair results in excellent patient satisfaction and cost-effectiveness, regardless of age. Cite this article: Bone Joint J 2019;101-B:860-866.

Superior capsule reconstruction using dermal allograft: early outcomes and survival

BACKGROUND

Superior capsule reconstruction (SCR) has shown promising outcomes in its initial description, but lacks additional reports analyzing outcomes. This study analyzes early outcomes of SCRs in patients with massive irreparable rotator cuff tears.

METHODS

A retrospective analysis of all SCRs at our institution from January 1, 2015, to August 31, 2017, was performed with a minimum 6-months follow-up. A total of 34 patients were included with a mean age of 60 years. SCR was performed by 1 of 6 fellowship trained surgeons.

RESULTS

At an average follow-up of 12 months, 22 patients were identified as failures after modified Neer classification. Furthermore, 8 of these patients have undergone a reoperation, whereas an additional 14 patients were considered clinical failures experiencing continued pain and a lack of shoulder function. Of note, 2 of the 3 patients with a subscapularis tear had a failure. In addition, revision cases, female gender, increased fatty infiltration in the infraspinatus and low surgeon volume were associated with a higher rate of failure. There was no significant improvement in range of motion or functional scores.

CONCLUSION

SCR performed for large-to-massive irreparable rotator cuff tears has a high rate of persistent pain and poor function leading to clinical failure in 65% of patients. Risk factors predicting clinical failure included revision cases, female gender, increased Goutallier fatty infiltration of the infraspinatus, and low surgeon volume (n ≤ 10).

Change in the pennation angle of the supraspinatus muscle after rotator cuff tear repair

BACKGROUND

The pennation angle is an important architectural and functional feature of pennate muscles. The purpose of this study was to investigate the change in the pennation angle of the supraspinatus muscle after rotator cuff tear repair.

MATERIALS AND METHODS

The study included 68 patients who underwent arthroscopic rotator cuff repair and magnetic resonance imaging. The size of the tear was measured under arthroscopic visualization. The pennation angle of the supraspinatus both preoperatively and postoperatively and the integrity of the repaired cuff were determined by magnetic resonance imaging.

RESULTS

The preoperative pennation angle was significantly greater with enlargement of the tear size (P < .0001, analysis of variance). The retear rate was 29% in patients with medium tears and 59% in patients with large or massive tears. No retear was noted in patients with partial and small tears. The retear rate was 90.9% when the preoperative pennation angle was 20° or greater and was 12.3% when this angle was 19° or less, and the risk ratio for retear was 7.4 when this angle was 20° or greater. For repair-type tears, comparison between the preoperative and postoperative pennation angles showed a significant decrease in the mean value from 11.8° ± 3.7° to 9.9° ± 3.0° in the medium tear group (P = .007, paired t test) but no significant difference in the large or massive tear group (from 15.1° ± 7.0° to 13.3° ± 5.8°) (P = .33). For retear-type tears, no significance was found between groups.

CONCLUSION

The preoperative pennation angle is directly correlated with the tear configuration and could be one of the prognostic factors for postoperative cuff integrity. To restore the pennation angle, primary repair is more appropriate in smaller rotator cuff tears than in medium-sized tears.

Is routine distal clavicle resection necessary in rotator cuff repair surgery? A systematic review and meta-analysis

BACKGROUND

The objective of the present study was to perform a systematic review and meta-analysis of randomized controlled trials looking at the effect of distal clavicle resection in patients undergoing rotator cuff repair (RCR).

METHODS

A systematic literature search was undertaken to identify randomized controlled trials looking at RCR +/- distal clavicle resection. Primary clinical outcome measures included in the meta-analysis were American Shoulder Elbow Society (ASES) score, pain on visual analogue scale and range of motion in forward elevation.

RESULTS

The systematic review identified three studies with a total of 203 participants. Those who underwent distal clavicle resection in conjunction with RCR had worse pain and acromioclavicular joint tenderness at 3-month follow-up. This difference, however, was not observed at the 24-month follow-up. The mean difference (95% confidence interval) for the ASES score was 0.45 (-3.67 to 4.58) and pain on visual analogue scale was - 0.27 (-0.70 to 0.16).

CONCLUSIONS

Routine distal clavicle resection in the setting of rotator cuff repair does not result in improved outcomes for patients with no difference being observed at 24 months post surgery. The results of our systematic review and meta-analysis do not support routine distal clavicle resection when performing RCR.

Evaluating strategies and outcomes following rotator cuff tears

INTRODUCTION

Rotator cuff tear surgical repair techniques have significantly progressed. However, tendon retear following primary repair persistently occurs at high rates. Rehabilitation protocols, surgical fixation techniques, biologic therapy with scaffolds, platelet-rich plasma, and even stem cell applications are under study to promote adequate tendon healing.

METHODS

A nonsystematic query of the PubMed database was conducted in July 2016 utilizing the search terms "rotator cuff repair," "tear," "rehabilitation," "scaffold," "platelet-rich plasma," and "stem cell" to identify, analyze, and summarize relevant studies.

CONCLUSION

Individualized rehabilitation protocols may be the best approach for small to medium sized tears. Surgical fixation will continue to be debated as modifications to single-row technique and increases in suture number have improved tensile strength. Double-row repairs have been associated with higher costs. Transosseous equivalent technique exhibits comparable subjective and objective outcomes to single- and double-row repair at two-year follow-up. Biocompatible scaffold augmentation has showed inconsistent short-term results. Platelet-rich plasma has lacked uniformity in treatment preparation, administration, and outcome measurement with mixed results. Few human studies have suggested decreased retear rates and improved repair maintenance following bone marrow-derived mesenchymal stem cell augmentation. This review reiterated the necessity of additional high-quality, large-sample studies to develop any final verdict regarding efficacy.