RESUMEN
PURPOSE: To compare the clinical outcomes and retear rates after rotator cuff repair (RCR) between delaminated and non-delaminated tears. METHODS: This systematic review was conducted according to the preferred reporting items for systematic reviews and meta-analyses guidelines using the PubMed, Cochrane Library, the Web of Science and Embase databases. Only articles on arthroscopic RCR with clinical outcome scores and data on the number of rotator cuff retears and complete healing were included. This study's relevant data were extracted and statistically analyzed. The methodological index for nonrandomized studies was used to assess the risk of bias in the included studies. After conducting a heterogeneity test and sensitivity analysis to determine whether the samples were heterogeneous, the study also detected publication bias. A sub-group test was used to evaluate the influences of the imaging follow-up period on retear rates. RESULTS: Ten eligible articles were identified with 2,061 patients (925 in the delaminated group and 1,136 in the non-delaminated group). The meta-analysis demonstrated that delamination was significantly associated with higher retear rates (P = 0.026; odds ratio = 1.873, 95% confidence interval 1.079-3.252; I2 = 51.6%) with an imaging follow-up period of > 1 year and lower rates of complete healing (P = 0.036; odds ratio = 0.659, 95% confidence interval 0.446-0.973; I2 = 9.0%) in patients after rotator cuff repair. However, no significant differences were observed between the two groups based on American Shoulder and Elbow Surgeons score, Constant score, visual analog scale score, external rotation, internal rotation, or forward elevation. CONCLUSIONS: This meta-analysis found that delamination was significantly associated with higher retear rates with imaging follow-up period of > 1 year, and lower rates of complete healing. In addition, the preoperative and postoperative clinical scores and shoulder joint range of motion were similar between patients with delaminated and non-delaminated tears. LEVEL OF EVIDENCE: Level IV.
RESUMEN
BACKGROUND: Obesity influences the outcomes of orthopedic surgeries such as total knee arthroplasty and spinal surgery. However, the effect of obesity on the outcomes of rotator cuff repair is unknown. This systematic review and meta-analysis aimed to examine the effect of obesity on rotator cuff repair outcomes. METHODS: PubMed, EMBASE, Web of Science, and Cochrane Library databases were searched to identify relevant studies published from their inception till July 2022. Two reviewers independently screened titles and abstracts using the specified criteria. Articles were included if they indicated the effect of obesity on rotator cuff repair and the related outcomes after surgery. Review Manager 5.4.1 software was used to perform statistical analysis. RESULTS: Thirteen articles involving 85,497 patients were included. Obese patients had higher retear rates than nonobese patients (odds ratio [OR] 2.58, 95% confidence interval [CI] 1.23-5.41, P = .01), lower American Shoulder and Elbow Surgeons scores (mean difference [MD]: -3.59, 95% CI: -5.45 to [-1.74]; P = .0001), higher visual analog scale for pain (mean difference: 0.73, 95% CI: 0.29-1.17; P = .001), higher reoperation rates (OR 1.31, 95% CI 1.21-1.42, P < .00001), and higher rates of complications (OR 1.57, 95% CI 1.31-1.87, P = .000). Obesity did not affect the duration of surgery (MD: 6.03, 95% CI: -7.63 to 19.69; P = .39) or external rotation of the shoulder (MD: -1.79, 95% CI: -5.30 to 1.72; P = .32). CONCLUSION: Obesity is a significant risk factor for retear and reoperation after rotator cuff repair. Furthermore, obesity increases the risk of postoperative complications and leads to lower postoperative American Shoulder and Elbow Surgeons scores and higher shoulder visual analog scale for pain.