Abstract
Background Acute and chronic subscapularis dysfunction following tendon release during open shoulder stabilization may lead to reduced clinical outcome and patient satisfaction. The present study aimed to assess whether this occurs using a subscapularis splitting technique. Methods We reviewed 42 patients that underwent open shoulder stabilization using a subscapularis splitting approach. Eleven patients had additional procedures such as bone grafts or a posterior labral repair. The minimum follow-up was 2 years. There were 36 male and six female patients. The mean age was 24.3 years (range 15 years to 47 years). Patients were assessed for range of movement, stability, subscapularis muscle function and strength. The Oxford instability and the Rowe score questionnaires were performed. Magnetic resonance imaging (MRI) was used to assess the integrity and quality of subscapularis muscle and tendon. Results Median postoperative Oxford instability score and Rowe scores were 21 and 70, respectively. Two patients (4.8%) had redislocated following re-injury. No patient had signs of subscapularis dysfunction on examination or on MRI. External rotation was reduced by a mean of 15°. Thirty-two patients (80%) returned to their previous level of sport. Conclusions With a subscapularis splitting technique, we found no significant evidence of clinical or radiological dysfunction of the subscapularis musculotendinous unit.
Published Version
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