Use Of Planning Software To Quantify Change In Periscapular Muscle Length In Reverse Shoulder Arthroplasty

shoulder stability and function represented by Walch-Duplay and Rowe scores, and subjective shoulder value (SSV) for daily life and sports.Secondary outcome measures included assessment of coracoid bone block position and union, and glenohumeral osteoarthritis using X-rays and computer tomography (CT) at last follow-up.Results: Three patients (7%) had a recurrence of instability: one due to seizure, one following a fall with the arm hyperextended, and one related to lysis of the bone block.Two patients were revised because of recurrent instability with arthroscopic distal clavicle autograft.There were no infections, neurologic complications, or hardware failures.The Walch-Duplay score was 90 (95% CI 76.8-93.2) and the Rowe score 95 (95% CI 77.2-92.2).The Median SSV averaged 96% (95% CI 87.5-97.0)for daily life and 90% (95% CI 75.7-90.2) for sports practice.Mean external rotation with the arm at side was 60 (95%CI 59-70) with a median loss of 10 (95%CI 3-17) compared to the contralateral side.Among patients playing sports preoperatively, 36 patients (95%) were able to return to sport: 25 (67%) at the same level and 7 (18%) at a lower level.The coracoid bone graft was flush with the glenoid surface in 96% of the cases and below the equator in 89%.The graft developed nonunion in 11%, fractured in 5% (the two patients with recurrence after a trauma and after seizure).Conclusion: Combined arthroscopic Latarjet and HSR is an efficient solution for dealing with significant bipolar glenohumeral bone loss.The combined procedure deserves consideration in a high-risk population including combined bone loss, recurrent anterior instability after failed previous stabilization procedures and/or seizure.