Thermal capsulorrhaphy for isolated posterior instability of the glenohumeral joint without labral detachment.

BACKGROUND

Posterior instability of the glenohumeral joint is uncommon, and a minimally invasive, technically easy method of treatment with consistent results has not been reported.

HYPOTHESIS

Thermal capsulorrhaphy for posterior instability with a period of postoperative immobilization will satisfactorily reestablish shoulder stability.

STUDY DESIGN

Case series; Level of evidence, 4.

METHODS

A total of 15 shoulders (13 patients) with isolated posterior instability without labral detachment were treated with thermal capsulorrhaphy. Eleven shoulders were immobilized for 6 weeks after surgery; 14 shoulders were clinically evaluated at a mean of 36 months (range, 26-53 months) after surgery. Of these patients, 2 (3 shoulders) had declined postoperative immobilization.

RESULTS

Eleven shoulders were rated as excellent or good, and 3 experienced recurrent instability and were considered failures. The 3 failures occurred in 1 of 11 shoulders that were immobilized and 2 of 3 (in the same patient) that were not immobilized postoperatively.

CONCLUSION

Thermal capsulorrhaphy for posterior instability of the glenohumeral joint, followed by 6 weeks of postoperative immobilization, restored glenohumeral stability in this group of patients.