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ISOLATED RUPTURE OF THE SUBSCAPULARIS TENDON: OUTCOME FOLLOWING SURGICAL REPAIR



Abstract

Introduction and Aims: Isolated rupture of the subscapularis tendon is an uncommon condition that has generally been treated by early surgical repair. However, very little information is available regarding functional outcome following surgery. The purpose of this study was to evaluate patient reported outcome following surgical repair with a minimum follow-up of 12 months.

Method: Thirteen consecutive patients underwent arthroscopy followed by open surgical repair of an isolated traumatic rupture of the subscapularis tendon. A deltopectoral approach was used in all cases with repair of the tendon using suture anchors. Tenodesis of the long head of the biceps tendon was carried out in all patients because of instability or rupture. Standardised pre- and post-operative examinations were performed which included goniometric measurements of range of motion and an assessment of subscapularis function and strength. The ASES Shoulder Assessment Form was completed both pre-operatively and at final review.

Results: All patients reported significant pain and functional limitations pre-operatively, with an average pain score of 7/10 and ASES score of 41.2. Limitation of active arm elevation and clinical evidence of sub-scapularis rupture was present in all but one patient. At an average follow-up of 18 months all patients were satisfied and would undergo the procedure again. The average ASES score improved to 91.9, with all patients reporting minimal or no pain. All patients regained overhead elevation and external rotation to within 10 degrees of the other side. Internal rotation and subscapularis function improved in all patients. There were no complications.

Conclusion: Early surgical repair of isolated tears of the subscapularis tendon provides excellent pain relief and reliable restoration of shoulder function and strength. Patient satisfaction is high and the average ASES score can be significantly improved. Associated abnormalities of the long head of biceps tendon are common and should be addressed at the time of surgery.

These abstracts were prepared by Editorial Secretary, George Sikorski. Correspondence should be addressed to Australian Orthopaedic Association, Ground Floor, The William Bland Centre, 229 Macquarie Street, Sydney, NSW 2000, Australia.

None of the authors is receiving any financial benefit or support from any source.