The Open Capsular Shift-Latarjet Procedure for Recurrent Anterior Shoulder Instability

Background: Capsular management is having an increasingly important place during the open Latarjet procedure especially in preventing postoperative glenohumeral arthritis. The open capsular shift-Latarjet procedure consists of the classic Latarjet procedure associated with a glenoid T-based capsular shift to treat patients with high risk of recurrent anterior shoulder instability. Indications: Patients presenting with humeral and/or glenoid bone loss, patients practicing professional activities or sports at risk of recurrence and without any previous capsular surgery, or major capsular deficiency. Technique Description: After a classic deltopectoral approach and the osteotomy of the coracoid process, a horizontal split of the subscapularis is performed. Then a glenoid T-based capsulotomy is performed, and 2 passing wire suture threads are passed through the inferior flap of the capsule to prepare the capsular shift. A first, soft, all-sutured anchor is inserted at the inferior part of the glenoid medially to the articular surface. The coracoid graft is then positioned with a first inferior cancellous screw to be flush with the articular surface and fixed using a second cancellous screw. A second anchor is placed laterally and superiorly to the coracoid at the anterior scapular neck. The capsular shift is performed using a passing wire technique to suture the capsular flap to both anchors and to ensure the extraarticular positioning of the coracoid. Results: Bouju et al found a low rate of recurrence with no revision surgeries and a significative lower incidence of osteoarthritis (8.6%) at 10-year follow-up compared with the current literature when suturing the capsule to the coracoid process. Itoigawa et al concluded that suturing the capsule on the coracoid may increase the risk of osteoarthritis due to a direct contact between the humeral head and the transferred coracoid, thus we suggest attaching the capsule over the glenoid. Discussion/Conclusion: With appropriate patient selection, this technique is safe and reliable to treat patients with anterior instability without any specific risk related to the surgery. The association of the capsular repair is an appropriate solution to better restore the anatomy and to prevent the long-term risk of glenohumeral arthritis.

Dissociation of the Glenosphere: A rare Post-operative Complication of Reverse shoulder Replacement

Introduction: Reverse shoulder replacement (RSR) has been accepted as the treatment of choice for glenohumeral arthritis with irreparable rotator cuff tear. Dislocation has been a potential complication of RSR but glenosphere disengagement is a rare complication itself. There have been only few published reports of this complication in the literature. Case Report: In this case report, we have presented a case of repeated disengagement of glenoid sphere post-RSR in a 72-year-old male retired army personnel operated with Zimmer Biomet comprehensive RSR design. Conclusion: In our case scenario, we postulate that soft-tissue interposition was the reason for disengagement during first episode and was successfully relocated after removal. However, the subsequent disengagement was due to improper seating of sphere due to large central screw. Revision to a smaller central screw size appears to be the definitive solution in such case. Keywords: Reverse shoulder replacement, glenosphere disengagement, glenohumeral arthritis, irreparable rotator cuff tear.