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Structural integrity after rotator cuff repair does not correlate with patient function and pain: a meta-analysis
Robert D Russell1, Justin R Knight1, Edward Mulligan1
1Sports Medicine and Shoulder Service, Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, 1801 Inwood Road, Dallas, TX 75390-8883. E-mail address for M.S. Khazzam: Michael.khazzam@utsouthwestern.edu.
Rotator cuff repair outcomes show no clinically significant functional differences regardless of repair integrity. However, intact repairs demonstrate significantly improved strength compared to retears.
Area of Science:
- Orthopedic Surgery
- Biomechanical Engineering
- Sports Medicine
Background:
- The relationship between rotator cuff repair structural integrity and patient clinical outcomes is debated.
- Assessing this correlation is crucial for understanding repair success.
Purpose of the Study:
- To evaluate the association between patient function and rotator cuff repair structural integrity.
- To synthesize evidence from high-quality studies on rotator cuff repair outcomes.
Main Methods:
- Systematic review and meta-analysis of Level I and II studies.
- Inclusion of studies with outcome measures and imaging assessment of repair integrity.
- Statistical analysis comparing outcomes based on repair integrity.
Main Results:
- 78.3% of 861 patients had intact rotator cuff repairs at follow-up.
- No difference in tear size between intact repairs and retears.
- Improved functional scores (UCLA, Constant, ASES) and reduced pain (VAS) were observed regardless of repair integrity, though intact repairs showed higher Constant and UCLA scores.
- Intact repairs demonstrated significantly greater strength in forward elevation.
Conclusions:
- Clinically, functional outcomes and pain levels after rotator cuff repair are not significantly different irrespective of structural repair integrity.
- Structural integrity of rotator cuff repair is associated with significantly improved muscle strength.
