A retrospective study was performed on twenty shoulders in nineteen
patients who had been managed for severe loss of external rotation of the
glenohumeral joint after a previous anterior capsulorrhaphy for recurrent
instability. All patients had noted a restricted range of motion, and
seventeen shoulders had been painful. In seven shoulders, the humeral head
had been subluxated or dislocated posteriorly, and sixteen shoulders had
been affected by mild to severe glenohumeral osteoarthrosis. All twenty
shoulders were treated with a reoperation, which consisted of a release of
the anterior soft tissue. In addition, eight shoulders had a total
arthroplasty and one had a hemiarthroplasty. At an average duration of
follow-up of forty-eight months, all shoulders had an improvement in the
ratings for pain and range of motion. The average increase in external
rotation was 45 degrees (range, 25 to 65 degrees). Patients who have a
major loss of external rotation following anterior capsulorrhaphy of the
shoulder may be at risk for the development of posterior subluxation and
glenohumeral osteoarthrosis. The performance of an anterior release should
be considered for these patients.