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Rotator interval lesion.
1Nobuhara Hospital, Hyogo, Japan.
Clinical Orthopaedics and Related Research
|October 1, 1987
Summary
Surgical repair of rotator interval (RI) lesions effectively treats painful shoulder instability. This study shows 96% good or excellent outcomes for patients with persistent shoulder pain due to RI lesions.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Shoulder Pathology
Background:
- Persistent shoulder pain can stem from inferior instability within the rotator interval (RI).
- The RI is anatomically defined as the space between the subscapularis and supraspinatus tendons.
- Two types of RI lesions (Type I contracted, Type II unstable) are identified, differing in inflammation depth.
Purpose of the Study:
- To elucidate the pathogenesis of painful shoulder syndrome related to rotator interval lesions.
- To evaluate the efficacy of surgical repair for rotator interval instability.
- To highlight the importance of diagnosing and treating RI lesions for persistent shoulder pain.
Main Methods:
- Arthrography and surgical exploration were used to identify rotator interval lesions.
- Surgical repair of 106 shoulders with RI lesions was performed in a standardized externally rotated position.
- Follow-up evaluation of 78 shoulders assessed treatment outcomes using a grading system.
Main Results:
- Surgical repair in external rotation facilitated optimal tendon apposition.
- 96% of evaluated shoulders achieved good or excellent outcomes post-operatively.
- Only 4% of shoulders were graded as poor, indicating high treatment success.
Conclusions:
- Rotator interval lesions are a significant cause of shoulder instability and pain.
- Surgical intervention, particularly in external rotation, provides a high success rate for RI lesions.
- Accurate diagnosis and timely treatment of RI lesions are crucial for managing chronic shoulder pain.