Do functional outcomes and cuff integrity correlate after single- versus double-row rotator cuff repair? A systematic review and meta-analysis study

Double-row suture-bridge technique does not yield better clinical and radiological results than single-row technique in patients older than 55 years at 2 years minimum follow-up: A comparative study

Purpose

Arthroscopic rotator cuff repair has evolved, with suture anchor-based techniques like single-row (SR) and Double-row Suture-bridge (DRSB) gaining popularity. Despite improvements, early repair failures remain concerning, necessitating continued assessment of repair methods and devices' lasting impact. This study compares DRSB versus SR repairs at 24 months minimum follow-up, hypothesizing superior clinical outcomes and improved tendon healing with DRSB techniques.

Methods

Fifty patients with rotator cuff tears underwent either SR or DRSB repairs. Clinical evaluation included standardized scoring systems and strength testing. Magnetic Resonance Imaging (MRI) assessed tendon integrity. Partial cuff tears were evaluated according to Snyder's Southern California Orthopaedic Institute rotator cuff classification system, which classifies <2 cm lesions as C2 in its scoring system.

Results

Both groups showed comparable clinical outcomes, strength and MRI findings at 24 months minimum follow-up. No significant correlation was found between repair technique and clinical outcomes or retear rates. Preoperative Patte and Goutallier grades >1 were associated with lower postoperative Constant-Murley scores.

Conclusion

This study suggests that both SR and DRSB techniques offer comparable clinical outcomes and tendon healing rates for rotator cuff tears in patients over 55 at 24 months minimum follow-up. While limitations exist, our findings contribute to understanding optimal surgical approaches, emphasizing individualized treatment based on patient characteristics and surgeon expertise. Further research, including randomized controlled trials with long-term follow-up, is needed to refine treatment algorithms and improve patient outcomes in rotator cuff surgery.

Level of Evidence

Level III.

Rotator cuff tears

Rotator cuff tears are the most common upper extremity condition seen by primary care and orthopaedic surgeons, with a spectrum ranging from tendinopathy to full-thickness tears with arthritic change. Some tears are traumatic, but most rotator cuff problems are degenerative. Not all tears are symptomatic and not all progress, and many patients in whom tears become more extensive do not experience symptom worsening. Hence, a standard algorithm for managing patients is challenging. The pathophysiology of rotator cuff tears is complex and encompasses an interplay between the tendon, bone and muscle. Rotator cuff tears begin as degenerative changes within the tendon, with matrix disorganization and inflammatory changes. Subsequently, tears progress to partial-thickness and then full-thickness tears. Muscle quality, as evidenced by the overall size of the muscle and intramuscular fatty infiltration, also influences symptoms, tear progression and the outcomes of surgery. Treatment depends primarily on symptoms, with non-operative management sufficient for most patients with rotator cuff problems. Modern arthroscopic repair techniques have improved recovery, but outcomes are still limited by a lack of understanding of how to improve tendon to bone healing in many patients.

Cannabidiol for Postoperative Pain Control After Arthroscopic Rotator Cuff Repair Demonstrates No Deficits in Patient-Reported Outcomes Versus Placebo: 1-Year Follow-up of a Randomized Controlled Trial

Background

Cannabidiol (CBD) has been shown recently to positively affect patient pain and satisfaction immediately after arthroscopic rotator cuff repair (ARCR). However, it is unclear whether the addition of CBD to a perioperative regimen could affect postoperative outcomes.

Purpose

To evaluate patient-reported outcomes among patients who underwent ARCR and received buccally absorbed CBD or an identical placebo for early postoperative pain management at 1-year follow-up.

Study Design

Randomized controlled trial; Level of evidence, 2.

Methods

Eligible patients had previously participated in a multicenter, placebo-controlled, randomized, double-blinded trial that evaluated the analgesic effects of CBD in the immediate postoperative period after ARCR. The experimental group received 25 mg of CBD 3 times/day if <80 kg and 50 mg of CBD 3 times/day if >80 kg for 14 days, with the control group receiving an identical placebo. The following outcomes were assessed at minimum 1-year follow-up: visual analog scale (VAS) for pain, American Shoulder and Elbow Surgeons (ASES) score, Single Assessment Numeric Evaluation (SANE), and patient satisfaction. The rates of achievement of the Patient Acceptable Symptom State (PASS) were compared based on ASES at latest follow-up. Continuous and categorical variables were compared with the Mann-Whitney U test and Fisher exact test, respectively.

Results

Follow-up was obtained from 83 of 99 patients (83.8%) who completed the original trial. There were no significant differences between the CBD and control groups with respect to age, sex, body mass index, rate of concomitant procedures, or number of anchors used intraoperatively. At 1-year follow-up, there were no significant differences between the CBD and control groups in VAS pain (0.8 vs 1.2, P = .38), ASES (93.0 vs 91.1, P = .71), SANE (87.6 vs 90.1, P = .24), or satisfaction (97.4 vs 95.4, P = .41). A majority of patients achieved the PASS (81.0% [CBD] vs 77.5% [control]; P = .79).

Conclusion

Perioperative use of CBD for pain control among patients undergoing ARCR did not result in any significant deficits in pain, satisfaction, or patient-reported outcomes at 1-year postoperatively compared with a placebo control group. These findings suggest that CBD can be considered in a postoperative multimodal pain management regimen without detrimental effects on outcome.

Registration

NCT04672252 (ClinicalTrials.gov identifier).

Arthroscopic rotator cuff repair using a single or double row technique: A meta-analysis of randomized clinical trial

PURPOSE

To compare the double row technique versus the single row technique for arthroscopic rotator cuff repair, in order to assess whether there are clinical differences.

METHODS

Systematic review of randomized clinical trials comparing the clinical results of the double-row technique versus the single-row technique in arthroscopic rotator cuff repair. Demographic, clinical, and surgical variables were analyzed, including functional scores, tendon healing rate, and re-tear rate.

RESULTS

Thirteen randomized clinical trials were selected. 437 patients in the single row group (50.7%) and 424 patients in the double row group (49.3%) were analyzed. No significant differences were found between the two groups in terms of age (P=.84), sex (P=.23) and loss to follow-up (P=.52). Significant differences were found for the better results of the double row technique at the UCLA level (P=.01). No significant differences were found on the Constant-Murley scale (P=.87) or on the ASES scale (P=.56). Similarly, there was a higher healing rate (P=.006) and less risk of rotator cuff re-tears with the double row technique (P=.006).

CONCLUSIONS

In rotator cuff repair, the double row technique was found to be superior to the single row technique in terms of better UCLA score, better tendon healing rate, and lower re-tear rate. No clinically significant differences were found on the Constant-Murley scale or on the ASES scale.

[Single-row versus double-row arthroscopic repair in the treatment of rotator cuff tears. A systematic review.]

Purpose

The purpose of this study is to perform a systematic review of the scientific literature to compare single and double row techniques for rotator cuff tears in terms of functional, pain improvement and structural healing of the tendon.

Methods

In order to carry out the research, a systematic selection of scientific articles has been made by consulting PubMed and The Cochrane Library databases. The articles included in the present study compare the single-row and double-row techniques, with publication date between 2016 and 2021.

Results

Diverse results are observed in the UCLA, SST, Constant and ASES assessment scales and in the range of mobility, therefore, the superiority of one technique in terms of functional results is not established. The double row technique may show superiority in the strength variable, although there is a methodological variability in its measurement. The double-row technique may be related to more intense postoperative pain, while the single-row technique to residual shoulder pain. However, the variables strength and pain show non-homogeneous or coincident data. The superiority of the double row repair in the structural healing of the tendon and a lower re-tear rate than the single row technique is established with statistically significant results, being the most homogeneous and coincident studies.

Rotator cuff repairs with all-suture tape anchors: no difference in outcomes between with or without all-suture tape anchors

PURPOSE

This study aimed at comparing the outcomes of medium- to large-sized rotator cuff repairs performed using the suture bridge technique either with or without tape-like sutures, and single row techniques with conventional sutures.

METHODS

A total of 135 eligible patients with medium to large rotator cuff tears were identified and analyzed retrospectively, from 2017 to 2019. Only repairs using all-suture anchors were included in the study. Patients were divided into the following three groups: single-row (SR) repair (N = 50), standard double-row suture bridge (DRSB) repair with conventional sutures (N = 35), and DRSB with tape-like sutures (N = 50). The average postoperative follow-up period was 26.3 ± 9.8 months (range, 18-37).

RESULTS

DRSB with tapes had the highest re-tear rate of 16% (8/50), but there was no significant difference with the re-tear rates observed in SR (8%, 4/50) and DRSB with conventional sutures (11.4%, 4/35) (n.s.). DRSB with tapes demonstrated higher rate of type 2 re-tears (10%) compared to type 1 re-tears (6%), but the other two groups showed either similar or higher rates of type 1 re-tears compared to that of type 2. Post-operative functional scores of the three groups improved significantly (all p < 0.05), but the differences between the groups were not statistically significant.

CONCLUSIONS

No clinical difference in functional outcomes and re-tear rates were observed in DRSB with tapes when compared with SR and DRSB using the conventional sutures. Tape-like DRSB suture which was expected to be superior by its biomechanical advantage was clinically non-superior to conventional DRSB suture. There were no significant differences in VAS scores and UCLA scores.

LEVEL OF EVIDENCE

Level III.

Healthcare costs of failed rotator cuff repairs

Background

The goal of this study was to estimate the short-term (∼2 years) healthcare costs of failed primary arthroscopic rotator cuff repair (RCR) in the United States.

Methods

A review of current literature was performed to estimate the number of RCR performed in the United States in the year 2022 and the rate of progression of these patients to lose repair continuity, reach clinical failure, and progress to nonoperative intervention and revision procedures. A review of the current literature was performed to estimate the costs incurred by these failures over the ensuing 2-year postoperative time period.

Results

The direct and indirect healthcare costs of structural and clinical failure of primary RCR performed in 2022 are estimated to reach $438,892,670 in the short-term postoperative period. The majority of the costs come from the estimated $229,390,898 in nonoperative management that these patients undergo after they reach clinical failure.

Conclusion

The short-term healthcare costs of failed arthroscopic RCR performed in the United States in 2022 are predicted to be $438,892,670. Although RCR improves quality of life, pain, function, and is cost-effective, there remains great potential for reducing the economic burden of failed RCR repairs on the US society. Investments into research aimed to improve RCR healing rates are warranted.

Clinical Relevance

Although RCR improves quality of life, pain, function, and is cost-effective, this study provides evidence that there remains great potential for reducing the economic burden of failed RCR repairs on the US society. Investments into research aimed to improve RCR healing rates are warranted.

Comparison of Outcomes after Arthroscopic Rotator Cuff Repair between Elderly and Younger Patient Groups: A Systematic Review and Meta-Analysis of Comparative Studies

This study aimed to compare the outcomes of arthroscopic rotator cuff repair (ARCR) surgery between younger and older patients. We performed this systematic review and meta-analysis of cohort studies comparing outcomes between patients older than 65 to 70 years and a younger group following arthroscopic rotator cuff repair surgery. We searched MEDLINE, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), and other sources for relevant studies up to 13 September 2022, and then assessed the quality of included studies using the Newcastle-Ottawa Scale (NOS). We used random-effects meta-analysis for data synthesis. The primary outcomes were pain and shoulder functions, while secondary outcomes included re-tear rate, shoulder range of motion (ROM), abduction muscle power, quality of life, and complications. Five non-randomized controlled trials, with 671 participants (197 older and 474 younger patients), were included. The quality of the studies was all fairly good, with NOS scores ≥ 7. The results showed no significant differences between the older and younger groups in terms of Constant score improvement, re-tear rate, or other outcomes such as pain level improvement, muscle power, and shoulder ROM. These findings suggest that ARCR surgery in older patients can achieve a non-inferior healing rate and shoulder function compared to younger patients.

Prognostic Factors for Clinical Outcomes After Arthroscopic Rotator Cuff Repair

Background

Limited knowledge exists regarding prognostic factors after rotator cuff repair.

Purpose

To identify pre- and perioperative predictors for functional outcomes after arthroscopic rotator cuff repair.

Study Design

Case-control study; Level of evidence, 3.

Methods

This study included patients who underwent arthroscopic rotator cuff repair between January 2013 and April 2019 and who had preoperative magnetic resonance imaging scans. The procedures were performed by 4 shoulder surgeons at a single institution. Excluded were patients who had previous surgeries, those who underwent open surgery, and those without 12- and 24-month follow-up clinical data. Patient-reported outcomes (American Shoulder and Elbow Surgeons [ASES] Standardized Shoulder Assessment Form and University of California, Los Angeles [UCLA] Shoulder Rating Scale scores) were assessed preoperatively and at 6, 12, and 24 months postoperatively. Using multiple linear regression analysis, the authors evaluated the influence of 29 variables relating to patient, lesion, and procedure characteristics on postoperative outcomes, with the 24-month ASES score as the dependent variable.

Results

The study sample consisted of 474 patients (500 shoulders). The median ASES score increased from 41.6 preoperatively to 88.3 at 24 months (P < .001), and the median UCLA score increased from 14 preoperatively to 32 in the same period (P < .001). The following variables were found to be independent predictors for higher 24-month postoperative ASES score: male sex, absence of rheumatologic disease, older age, lower degree of supraspinatus muscle fatty degeneration, acromioplasty, and a higher preoperative ASES score.

Conclusion

The prognostic factors for better clinical results at 24 months after arthroscopic rotator cuff repair were male sex, absence of rheumatologic disease, older age, lower degree of fatty degeneration of the supraspinatus muscle, concomitant acromioplasty, and higher preoperative ASES score.

The relationship between preoperative Goutallier stage and retear rates following posterosuperior rotator cuff repair: a systematic review

BACKGROUND

An association between higher preoperative Goutallier stage and higher retear rates following primary rotator cuff repairs has been previously reported. However, there are few reviews which have described clear retear rates for each repaired tendon classified according to preoperative Goutallier stage. The purpose of this study was therefore to systematically review the literature on the relationship between preoperative Goutallier stage and retear rates and provide predictable retear rates following primary repair of posterosuperior rotator cuff tears.

METHODS

A systematic literature review was performed in compliance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and checklist utilizing PubMed, MEDLINE, and Cochrane Library. English-language studies of Level I through IV evidence examining the clinical results of primarily repaired posterosuperior rotator cuff tears as a function of Goutallier stage using magnetic resonance imaging were included. The primary outcome of interest was retear rates according to preoperative Goutallier stage. As a secondary outcome, rotator cuff tears were divided into 2 subgroups (Goutallier stage 0-2 and 3-4) and retear rates were assessed between the 2 subgroups. A random effects model with binomial within-study variance was used for both outcomes.

RESULTS

Nine studies (687 shoulders) satisfied all inclusion criteria and reported sufficient data for statistical analysis. In the supraspinatus muscle group, rotator cuff muscles with preoperative Goutallier stages of 0, 1, and 2 had retear rates of 19.1%, 27.8%, and 33.5%, respectively, with no significant differences between each category. In contrast, when preoperative Goutallier stage of 3 and 4 existed, significant differences compared to Goutallier 0, 1, and 2 were observed with a retear rate of 74.1% and 78.5%, respectively. In the infraspinatus muscle group, the retear rates following rotator cuff repairs were 20.0%, 32.1%, and 35.1% in Goutallier 0, 1, and 2, respectively, with no significant differences between each category. In Goutallier 3 and 4, the rate was 76.6% and 100.0%, respectively, with significant differences compared to Goutallier 0, 1, and 2.

CONCLUSION

The results of this study have clearly demonstrated that retear rates following surgical repair of the rotator cuff increased in proportion to the preoperative Goutallier stage in both the supraspinatus and infraspinatus muscles.

Resorbable Bioinductive Collagen Implant Is Cost Effective in the Treatment of Rotator Cuff Tears

Purpose

This study was conducted to investigate whether the use of resorbable bioinductive collagen implant (RBI) in addition to conventional rotator cuff repair (conventional RCR) is cost-effective when compared to conventional RCR alone, in the treatment of full-thickness rotator cuff tears (FT RCT).

Methods

We developed a decision analytic model to compare the expected incremental cost and clinical consequences for a cohort of patients with FT RCT. The probabilities for healing or failure to heal (retear) were estimated from the published literature. Implant and healthcare costs were estimated from a payor's perspective in 2021 U.S. prices. An additional analysis included indirect cost estimations (e.g., productivity losses). Sensitivity analyses explored the effect of tear size, as well as the impact of risk factors.

Results

The base case analysis demonstrated that resorbable bioinductive collagen implant + conventional rotator cuff repair results in incremental costs of $232,468 and an additional 18 healed RCTs per 100 treated patients over 1 year. The estimated incremental cost-effectiveness ratio (ICER) is $13,061/healed RCT compared to conventional RCR alone. When return to work was included in the model, RBI + conventional RCR was found to be cost saving. Cost-effectiveness improved with tear size with the largest benefit seen in massive tears compared to large tears, as well as patients at higher risk of retearing.

Conclusions

This economic analysis demonstrated that RBI + conventional RCR delivered improved healing rates at a marginal increase in costs when compared to conventional RCR alone and is, therefore, cost-effective in this patient population. Considering indirect costs, RBI + conventional RCR resulted in lower costs compared to conventional RCR alone and is, therefore, deemed to be cost saving.

Level of Evidence

Level IV, economic analysis.

Two-year outcomes with a bioinductive collagen implant used in augmentation of arthroscopic repair of full-thickness rotator cuff tears: final results of a prospective multicenter study

BACKGROUND

Full-thickness rotator cuff tears (FTRCTs) represent a common shoulder injury that, if untreated, can progress in size, become increasingly painful, and inhibit function. These lesions are often surgically repaired, with double-row arthroscopic repair often preferred for larger tears. Biological augmentation technologies have been developed to improve rates of postoperative radiographic retear and enhance patient-reported outcomes after surgical FTRCT repair. This study sought to confirm that augmented repair with a bioinductive bovine collagen implant results in favorable retear rates and patient outcomes with follow-up to 2 years.

METHODS

A prospective multicenter cohort study was undertaken to determine the efficacy and safety of augmenting single- or double-row arthroscopic repair of FTRCTs with a bioinductive bovine collagen implant. Of 115 adult patients participating, 66 (57.4%) had medium (1-3-cm) tears and 49 (42.6%) had large (3-5-cm) tears. Magnetic resonance imaging and patient-reported outcomes (American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form [ASES] and Constant-Murley Score [CMS]) were performed and recorded at baseline, 3 months, 1 year, and 2 years.

RESULTS

Mean duration of follow-up was 2.1 years (range, 1.5-2.9 years). Between baseline and 2-year follow-up, mean total thickness of the supraspinatus tendon increased by 12.5% for medium tears and by 17.1% for large tears. Radiographic retear was noted in 7 of 61 available patients (11.5%) with medium tears, and in 14 of 40 patients (35.0%) with large tears. In both groups, these tears primarily occurred before the 3-month follow-up visit (13 of 21 [61.9%]). Radiographic retear with the supplemented double-row (DR) repair technique was 13.2% overall (12 of 91 DR patients; 11.3% for medium tears and 15.8% for large tears). The minimal clinically important difference was achieved by >90% of patients with both medium and large tears for both ASES and CMS. There were 2 serious adverse events classified by the treating surgeon as being possibly related to the device and/or procedure (1 case of swelling/drainage and 1 case of intermittent pain). Nine patients (7.8%; 4 medium tears and 5 large tears) required reoperation of the index rotator cuff surgery.

CONCLUSION

Final 2-year data from this study confirm that using this implant in augmentation of arthroscopic double-row repair of FTRCTs provides favorable rates of radiographic retear and substantial functional recovery. The relative safety of the device is also further supported.

Can the Single Assessment Numeric Evaluation be used as a stand-alone subjective outcome instrument in patients undergoing rotator cuff repair?

BACKGROUND/HYPOTHESIS

There is no consensus to which patient-determined shoulder outcome scores should be considered when analyzing patient outcomes. Use of multiple patient-determined outcomes may be redundant and cause increased responder burden. The Single Assessment Numeric (SANE) has not been widely accepted as a stand-alone shoulder-specific outcome measure. The hypothesis was that SANE will correlate with and be comparable in responsiveness to other subjective outcome measures that have been used in a stand-alone fashion in patients undergoing rotator cuff repair (American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form [ASES], Western Ontario Rotator Cuff Index [WORC], and the Simple Shoulder Test [SST]). In addition, the SANE will be more relevant to each patient compared to the ASES, further supporting its use as a stand-alone shoulder-specific outcomes measure.

METHODS

A retrospective review of a database of patients undergoing rotator cuff repair was reviewed where the SANE was recorded with the ASES, WORC, and/or SST. Correlations were determined using the Pearson coefficient. Subgroup analysis was performed to determine if correlations differed in (1) preoperative and (2) postoperative outcome determinations. Responsiveness was determined by calculating the standardized response mean (SRM) and the effect size (ES) of all scores. Relevance and precision of the SANE and ASES were examined using 150 consecutive patients to determine the number of questions in each score that were not answered.

RESULTS

Correlation was excellent for the SANE and the ASES (n = 1838, r = 0.81, P < .0001), the WORC (n = 1793, r = 0.82, P < .0001), and the SST (n = 1836, r = 0.76, P < .0001). Correlation of preoperative scores was moderate and postoperative scores were excellent when comparing the SANE with all 3 scores. All scores were highly responsive, with the SRM of the SANE = 2.1, ASES = 2.2, WORC = 2.4, and the SST = 1.8. The ES of the SANE = 2.4, ASES = 2.7, WORC = 3.0, and the SST = 2.1. One hundred percent of the SANE scores were answered completely compared with 57% (P < .0001) of the ASES, with significant variability found in the answers to the "work" and "score" questions.

CONCLUSION

In patients undergoing rotator cuff repair, the SANE highly correlated and has equivalent responsiveness with the WORC, ASES, and SST, which have been used as stand-alone shoulder-specific outcomes measures. The SANE may provide the same information as the WORC, ASES, and SST regarding outcome with significant reduction in responder burden. This study supports that the SANE can be used as a subjective, stand-alone instrument for patients undergoing rotator cuff repair.

Transtendon Repair Under Switching-Scope Technique for Articular Partial-Thickness Rotator Cuff Tears

Partial-thickness rotator cuff tears are common diseases causing pain and disability. Among the different surgical methods, the transtendon repair technique is recommended due to its biomechanically superiority. However, this technique has a high learning curve and is time-consuming. In this Technical Note, we introduce a safer and more effective modified transtendon repair technique. Our switching-scope technique sets a switching stick into the glenohumeral joint through the posterior portal and is used as a guide for switching the arthroscope between the subacromial and articular spaces. This technique can reduce surgical time and overcome the disadvantage of vision limitation in articular-sided transtendon repair.

Does the critical shoulder angle influence retear and functional outcome after arthroscopic rotator cuff repair? A systematic review and meta-analysis

PURPOSE

This systematic review and meta-analysis aimed to evaluate the correlation between increased critical shoulder angle (CSA) and higher retear rates and functional outcomes after arthroscopic rotator cuff repair (ARCR).

METHODS

PubMed, Embase, Web of Science, and Cochrane Library databases published before January 2022 were comprehensively searched. Two reviewers independently reviewed the titles and abstracts using the specified criteria. Studies were included if the authors clearly described the correlation between the CSA and rotator cuff repair. Data on patient characteristics, mean CSA, retear rate, and the functional score was pooled from the selected articles. A meta-analysis was performed using Review Manager (RevMan) 5.4.1 software, 2020 (Cochrane Collaboration, Copenhagen, Denmark).

RESULTS

Eleven articles involving 1449 patients from 7 countries were included. The ages of the patients ranged from 45 to 75 years. The follow-up period ranged from 6 to 96 months. The mean CSA was greater in the retear group than in the non-retear group after ARCR (mean difference 2.73°; 95% confidence interval [CI] 0.69-4.77) (p = 0.009). Three studies evaluated the association between increased CSA and the postoperative retear rate. All three studies showed a higher postoperative retear rate in patients with an increased CSA (odds ratio 5.35; 95% CI 2.02-14.15; p = 0.0007). No association was found between CSA and Constant-Murley (Constant), the University of California at Los Angeles (UCLA), or Visual Analog Scale (VAS) scores during the follow-up period of 24-96 months (p > 0.05).

CONCLUSIONS

This systematic review and meta-analysis showed that CSA correlates highly with rotator cuff retear after ARCR. In addition, the postoperative retear rate of the rotator cuff increased with increased CSA. CSA appeared to not affect worse functional outcomes in patients after ARCR.

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.

Reparo artroscópico da lesão de manguito rotador: Uma análise da função, força muscular e dor entre técnicas de fileira simples e fileira dupla

Objective  To evaluate the patients submitted to arthroscopic repair of the rotator cuff (RC), comparing the functional results, muscle strength, and pain obtained after single row (SR) and double row (DR) techniques.

Methods  Data were collected at the postoperative follow-up (minimum of 12 months) of 128 patients submitted to arthroscopic RC repair from 2011 to 2018. The clinical-functional variables were collected through the clinical examination, and the demographic, surgical and injury variables of the RC were collected from the electronic medical records. The results were compared between the SR and DR groups.

Results  The DR group showed higher anterior elevation strength when compared with the SR group (SF: 4.72 ± 2.73 kg versus DR: 5.90 ± 2.73 kg; p  = 0.017). The other variables of muscle strength, Constant-Murley Score, University of California at Los Angeles Shoulder Rating Scale (UCLA), and pain, were similar. Performing the stratification by size, in the analysis of small and medium injuries, no differences were found between the groups. However, in the analysis of large and extensive injuries, patients submitted to DR presented superiority of both muscle lifting strength (SF: 3.98 ± 2.24 kg versus DR: 6.39 ± 2.73 kg) and Constant score (SF: 81 ± 10 versus DR: 88 ± 7).

Conclusion  The use of the DR technique in arthroscopic RC repair allowed higher levels of muscle strength for anterior shoulder elevation when compared with the SF technique. Data stratification in large and extensive injuries showed superiority of anterior shoulder elevation muscle strength and of the Constant score in patients submitted to DR.

A comparison of simple and complex single-row versus transosseous-equivalent double-row repair techniques for full-thickness rotator cuff tears: a systematic review and meta-analysis

BACKGROUND

Rotator cuff injuries have traditionally been managed by either single-row or double-row arthroscopic repair techniques. Complex single-row techniques have recently been proposed as a biomechanically stronger alternative treatment option. However, no rigorous meta-analysis has evaluated the effectiveness of complex single-row against double-row repair. This meta-analysis aims to evaluate clinical outcomes in patients with full-thickness rotator cuff injuries treated with both simple and complex single-row, as well as transosseous-equivalent (TOE) double-row procedures.

METHODS

An up-to-date literature search was performed using the predefined search strategy. All studies that met the inclusion criteria were assessed for methodological quality and included in the meta-analysis. Pain, functional scores, range of motion, and retear rate were all considered in the study.

CONCLUSION

The results of our meta-analysis suggest that there is no significant difference between complex single-row and TOE double-row procedures in any of the observed outcomes. At this point in time, the available comparative data between simple single-row and TOE double-row repair techniques are limited. Further high-quality studies are required to assess the clinical outcomes and cost-effectiveness of these different techniques.

Long-term follow-up of perianchor cyst formation after rotator cuff repair

Background

Perianchor cyst formation (PCF) can occur after arthroscopic rotator cuff repair with poly-L-lactic acid (PLLA) anchors; however, little is known about PCF after all-suture anchor (ASA) use.

Methods

We reviewed patients who underwent double-row arthroscopic rotator cuff repair from 2012 to 2017 with ASAs implanted in the medial row and PLLA anchors in the lateral row. We evaluated PCF (graded on magnetic resonance imaging) and compared physical examination and functional surveys between patients with PCF (WC) and without PCF (WoC) at long-term follow-up.

Results

Among twenty-two patients (23 shoulders), 93% of PLLA anchors (vs. 79% ASA) displayed a grade 0 PCF, P = .100. No PLLA anchors had a grade 3 or 4 PCF, compared to 11% of ASAs, P = .158. At a mean postoperative follow-up time of 113 weeks, there was no significant difference between WC and WoC cohorts with regard to range of motion, rotator cuff strength, American Shoulder and Elbow Surgeons survey scores, or retear rates. However, the WoC cohort had a significantly higher University of California at Los Angeles shoulder survey score at final follow-up (34.3 WoC vs. 30.9 WC, P = .024).

Conclusion

No difference was found in PCF between ASAs and PLLA anchors. At long-term follow-up, WoC patients had significantly improved functional outcome scores, based on the University of California at Los Angeles survey, but equivalent range of motion and rotator cuff strength examinations compared with WC patients.

Intratendinous Strain Variations of the Supraspinatus Tendon Depending on Repair Technique: A Biomechanical Analysis Regarding the Cause of Medial Cuff Failure

BACKGROUND

Double-row (DR) and transosseous-equivalent (TOE) techniques for rotator cuff repair offer more stability and promote better tendon healing compared with single-row (SR) repairs and are preferred by many surgeons. However, they can lead to more disastrous retear patterns with failure at the medial anchor row or the musculotendinous junction. The biomechanics of medial cuff failure have not been thoroughly investigated thus far.

PURPOSE

To investigate the intratendinous strain distribution within the supraspinatus tendon depending on repair technique.

STUDY DESIGN

Controlled laboratory study.

METHODS

Twelve fresh-frozen cadaveric shoulders were used. The intratendinous strain within the supraspinatus tendon was analyzed in 2 regions-(1) at the footprint at the greater tuberosity and (2) medial to the footprint up to the musculotendinous junction-using a high-resolution 3-dimensional camera system. Testing was performed at submaximal loads of 40 N, 60 N, and 80 N for intact tendons, after SR repair, after DR repair, and after TOE repair.

RESULTS

The tendon strain of the SR group differed significantly in both regions from that of the intact tendons and the TOE group at 40 N (P≤ .043) and from the intact tendons, the DR group, and the TOE group at 60 N and 80 N (P≤ .048). SR repairs showed more tendon elongation at the footprint and less elongation medial to the footprint. DR and TOE repairs did not provide significant differences in tendon strain when compared with the intact tendons. However, the increase in tendon strain medial to the footprint from 40 N to 80 N was significantly more pronounced in the DR and TOE group (P≤ .029).

CONCLUSION

While DR and TOE repair techniques more closely reproduced the strains of the supraspinatus tendon than did SR repair in a cadaveric model, they showed a significantly increased tendon strain at the musculotendinous junction with higher loads in comparison with the intact tendon.

CLINICAL RELEVANCE

DR and TOE rotator cuff reconstructions lead to a more anatomic tendon repair. However, their use has to be carefully evaluated whenever tendon quality is diminished, as they lead to a more drastic increase in tendon strain medial to the footprint, putting these repairs at risk of medial cuff failure.

Effects of focused continuous pulsed electromagnetic field therapy on early tendon-to-bone healing

Aims

Rotator cuff (RC) tears are common musculoskeletal injuries which often require surgical intervention. Noninvasive pulsed electromagnetic field (PEMF) devices have been approved for treatment of long-bone fracture nonunions and as an adjunct to lumbar and cervical spine fusion surgery. This study aimed to assess the effect of continuous PEMF on postoperative RC healing in a rat RC repair model.

Methods

A total of 30 Wistar rats underwent acute bilateral supraspinatus tear and repair. A miniaturized electromagnetic device (MED) was implanted at the right shoulder and generated focused PEMF therapy. The animals’ left shoulders served as controls. Biomechanical, histological, and bone properties were assessed at three and six weeks.

Results

Extension of the tendon from preload to the maximum load to failure was significantly better in the PEMF-treated shoulders at three weeks compared to controls (p = 0.038). The percentage strain was significantly higher in the PEMF group at both timepoints (p = 0.037). Collagen organization was significantly better (p = 0.034) as was tissue mineral density in the PEMF-treated group at three weeks (p = 0.028). Tendon immunohistochemistry revealed a prominent increase in type I collagen at the repair site at three weeks following continuous PEMF treatment compared with controls. None of the other tested parameters differed between the groups.

Conclusion

MED-generated PEMF may enhance early postoperative tendon-to-bone healing in an acute rat supraspinatus detachment and repair model. Superior biomechanical elasticity parameters together with better collagen organization suggest improved RC healing.

Cite this article: Bone Joint Res 2021;10(5):298–306.

Rotator Cuff Retears

» Regardless of recent advances in rotator cuff repair techniques, the rate of unhealed or recurrent rotator cuff tears remains high, with most recurrent rotator cuff tears occurring within the first 6 months after surgery. » Factors that can negatively affect tendon healing include older age, greater tear size, tendon retraction, and fatty infiltration. However, several clinical features that are often underestimated, including osteoporosis, diabetes, smoking, and hyperlipidemia, have proven to have an important influence on rotator cuff healing. » Recent meta-analyses that evaluated studies with Level-I and Level-II evidence have shown an overall increase in retear rates after single-row repair compared with double-row repair. However, to our knowledge, there are no Level-I clinical studies comparing different double-row configurations and, to date, no double-row repair technique has proven to be superior to the others. » The influence of postoperative rotator cuff healing on clinical outcomes is controversial. Although clinical differences may not be apparent in the short term, healed tendons have had better functional outcomes and greater strength in the midterm. » In general, a period of immobilization for 2 to 4 weeks, depending on tear size, is recommended. Graded supervised rehabilitation has proven to facilitate tendon healing without associated stiffness compared with early unprotected range of motion.

Double Row Knotted "Trident": 1 Suture Technique for Superior to Posterosuperior Small Cuff Tear

Many arthroscopy suture techniques have been described for small rotator cuff tears, but there is no consensus. The aim of this study is to describe a double-row knot technique, which we call a "trident point," for the superior and posterosuperior small cuff tear that is easily reproducible and has a fast learning curve. This knot takes into account the excess of tendon tissue on the foot print after a cuff suture, called a "dog-ear deformity." However clinical, ultrasound, and biomechanical evaluation with follow-up remains necessary to validate the sustainability of this arthroscopy technique.

[Research progress of treatment for massive rotator cuff tears]

Objective

To review the research progress of treatment for massive rotator cuff tears.

Methods

The domestic and foreign literature about the treatment of massive rotator cuff tears was reviewed. The methods and effectiveness were extensively summarized.

Results

The treatment of massive rotator cuff tears still needs long-term research to promote its continuous improvement. The main goal of treatment is to relieve the symptoms and improve the shoulder joint function. With the development of arthroscopic technique, arthroscopic repair of rotator cuff tears has become a mature surgical protocol. Among these techniques, superior capsule reconstruction and patch augmentation for massive rotator cuff tears acquire more attention in recent years. As for rotator cuff arthropathy, reverse shoulder arthroplasty is considered to be a final choice.

Conclusion

Surgical treatment is the main choice for massive rotator cuff tears. Patients' age and muscle condition should be taken into consideration to decide the surgical technique.

Does a subscapularis tear combined with a posterosuperior rotator cuff tear affect postoperative functional outcomes?

BACKGROUND

The subscapularis is biomechanically important for the shoulder. However, few studies have clinically assessed its importance using a comparative design. Our objective was to compare the functional outcomes in patients who underwent isolated repair of posterosuperior rotator cuff tears and those with repair of combined tears involving the subscapularis.

METHODS

We performed a retrospective cohort study evaluating patients who underwent arthroscopic full-thickness rotator cuff repair between January 2013 and May 2017. The patients were divided into 2 groups: isolated repair of posterosuperior tears and repair of combined tears involving the subscapularis. The primary outcome was to evaluate the American Shoulder and Elbow Surgeons (ASES) and University of California, Los Angeles (UCLA) scales at 24 months' follow-up.

RESULT

A total of 326 patients were evaluated: 194 with isolated posterosuperior repairs and 132 with combined subscapularis repairs. Both groups showed significant improvement with the procedure (P < .001). The ASES score at 24 months showed no significant difference (P = .426) between the group without subscapularis repair (median, 90.0; interquartile range [IQR], 24.8) and the group with subscapularis repair (median, 86.3; IQR, 33.2). Similarly, the UCLA score showed no difference between the groups (median, 33.0 [IQR, 6.0] and 32.5 [IQR, 8.8], respectively; P = .190). The preoperative functional evaluation also showed no significant differences between the groups.

CONCLUSION

The functional results did not differ between patients who underwent isolated repair of posterosuperior tears and those with repair of combined tears involving the subscapularis, according to the ASES and UCLA scales at 24 months.

The Postoperative Rotator Cuff

MR imaging interpretation following rotator cuff repair can be challenging and requires familiarity with various types of rotator cuff tear, their surgical treatments, normal postoperative MR imaging appearance, and complications. This article reviews the common surgical procedures for the reparable and nonreparable massive rotator cuff tears, their expected postoperative MR imaging findings, and imaging appearance of a range of complications.

Current Concepts in Rotator Cuff Repair Techniques: Biomechanical, Functional, and Structural Outcomes

There is substantial evidence indicating that double-row (DR) repair restores more of the anatomic rotator cuff footprint and is biomechanically superior to single-row (SR) repair. Transosseous-equivalent (TOE) techniques have shown biomechanical advantages when compared with traditional DR, including increased contact at the rotator cuff footprint, higher pressure at the tendon-bone interface, and increased failure strength. Several meta-analyses of evidence level 1 and 2 studies have shown a lower rate of failed/incomplete healing when DR repair was compared with SR repair types. There is some limited evidence that TOE techniques improve healing rates in large and massive tears as compared with SR and DR. Overall, most level 1 and 2 studies have failed to prove a significant difference between SR and DR repairs in terms of clinical outcomes. However, most studies include only short-term follow-up, minimizing the impact that the higher rate of retears/failed healing seen with SR repairs can have in the long term. There are no high-quality clinical studies comparing different DR configurations, and there are currently not enough clinical data to determine the functional advantages of various DR technique modifications over one another. Although numerous biomechanical and clinical studies comparing different rotator cuff repair techniques have been published in the past decade, none has achieved universal acceptance. It is essential for the orthopaedic surgeon to know in detail the available literature to be able to apply the most appropriate and cost-effective technique in terms of healing and functional outcomes. This review provides a critical analysis of the comparative biomechanical and clinical studies among SR, DR, and TOE techniques reported in the literature in the past decade.

Acute Cuff Tear Repair Trial (ACCURATE): protocol for a multicentre, randomised, placebo-controlled trial on the efficacy of arthroscopic rotator cuff repair

INTRODUCTION

Rotator cuff tear is a very common and disabling condition that can be related to acute trauma. Rotator cuff tear surgery is a well-established form of treatment in acute rotator cuff tears. Despite its widespread use and almost a gold standard position, the efficacy of an arthroscopic rotator cuff repair is still unknown. The objective of this trial is to investigate the difference in outcome between arthroscopic rotator cuff repair and inspection of the shoulder joint defined as placebo surgery in patients 45-70 years of age with an acute rotator tear related to trauma.

METHODS AND ANALYSIS

Acute Cuff Tear Repair Trial (ACCURATE) is a randomised, placebo-controlled, multicentre efficacy trial with sample size of 180 patients. Concealed allocation is done in 1:1 ratio. The randomisation is stratified according to participating hospital, gender and baseline Western Ontario Rotator Cuff Index (WORC). Both groups receive the same standardised postoperative treatment and physiotherapy. The primary outcome measure is the change in WORC score from baseline to 2-year follow-up. Secondary outcome measures include Constant-Murley Score, the Numerical Rating Scale for pain, subjective patient satisfaction and the health-related quality of life instrument 15 dimensions (15D). Patients and outcome assessors are blinded from the allocated intervention. The primary analysis of results will be conducted according to intention-to-treat analysis.

ETHICS AND DISSEMINATION

The study protocol for this clinical trial has been approved by the Ethics Committee of the Hospital District of Southwest Finland and Regional Ethics Committee in Linköping Sweden and Regional Committees for Medical and Health Research Ethics South East in Norway. Every recruiting centre will apply local research approvals. The results of this study will be submitted for publication in peer-reviewed journals.

TRIAL REGISTRATION NUMBER

NCT02885714; Pre-results.

The Clinical Effect of Arthroscopic Rotator Cuff Repair techniques: A Network Meta-Analysis and Systematic Review

Rotator cuff tears are common and are associated with shoulder pain, disability, and dysfunction. Previous studies that have reported different arthroscopic techniques are controversial. A network meta-analysis with indirect and direct evidence was performed to compare the effectiveness of arthroscopic techniques for the treatment of rotator cuff tears. PUBMED, the Cochrane Register of Controlled Trials, EMBASE and Scopus were searched based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement, and related studies that evaluated arthroscopic techniques for the treatment of rotator cuff tears were identified in May 2018. The primary outcome measure was the retear rate. The secondary outcome measures included the constant score and the range of motion (forward flexion and external rotation). Twenty-one trials comprising 1815 shoulders were included in the study. This study indicated that single-row (SR) repair resulted in a higher retear rate than suture bridge (SB) and double-row (DR) repairs. Moreover, the SR and DR repairs resulted in higher incidences of retear than SB repair. The ranking of the treatments based on the constant score and external rotation was SB repair, SR repair and DR repair, whereas the treatment ranking according to forward flexion was SB repair, DR repair and SR repair. In summary, this network meta-analysis provides evidence that SB repairs might be the best choice to improve the postoperative recovery of function and decrease the retear rate.

Recurrent tears of the rotator cuff: Effect of repair technique and management options

Retears of the rotator cuff, following operative repair, is not an uncommon event. Various factors have been shown to influence recurrence including the technique of repair. Multiple techniques have been performed with varying results and complications. The repair technique significantly affects the rate and pattern of retears. Although risk of retears with double row and suture bridge techniques is relatively low, medial cuff failure is a potential complication which poses significant challenges when revision repair is undertaken. Modifications in surgical techniques in, both, double row and suture bridge repairs can help decrease the risk of medial cuff failure. Thorough analysis of retear rates and patterns reported, and their relation with the repair technique, provides new insights about the pathogenesis of rotator cuff retears, their future prevention and appropriate management.