Results of Combined All-Arthroscopic Latarjet with Hill-Sachs Remplissage for Significant Bipolar Glenohumeral Bone Loss.

Background: Arthroscopic Latarjet using suture-button fixation has shown good clinical results and low recurrent instability in patients with significant glenoid bone loss (18). However, the presence of an associated Hill-Sachs lesion (HSL) is a risk factor for recurrent instability after isolated Latarjet (8,35,36). The aim of the study is to report clinical and radiological results following all-arthroscopic Latarjet combined with Hill-Sachs Remplissage (HSR).

Methods: Monocentric prospective study including 41 patients (mean age 28 ± 7 years) who underwent the combined procedure between 2014-2019 with minimum 2 years follow-up (mean 40 ± 13 months). Indications were glenoid bone loss >10% (mean 23.9% ± 7.5%) and large, deep HSL (Calandra 3). Five (13%) patients had signs of osteoarthrosis stage I preoperatively, four (10%) had previous stabilization surgery (3 cases isolated Bankart and 1 case Bankart combined with HSR), and five (13%) were epileptic. The HSR was performed first followed by guided Latarjet procedure. Primary outcome measures included shoulder stability and function represented by Walch-Duplay and Rowe scores, and subjective shoulder value (SSV) for daily life/sports. Secondary outcome measures included coracoid graft position and union, and glenohumeral osteoarthritis using X-rays and computer tomography (CT).

Results: Three patients (7%) had recurrent instability: one due to seizure, one following fall, and one related to graft osteolysis. Two patients were revised because of recurrence 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. Mean external rotation with the arm at side was 60˚ (95%CI 59-70) with a median loss 10° (95%CI 3-17) compared to contralateral side. Among patients playing sport preoperatively, 36 (95%) were able to return to sport: 25 (67%) at same level and 7 (18%) at lower level. The coracoid graft was flush with the glenoid surface in 96% of cases and subequatorial in 89%. The graft developed nonunion in 11% and fractured in 5%. Seven patients (18%) had radiographical signs of grade I osteoarthritis.

Conclusion: Combined arthroscopic Latarjet and HSR is an efficient solution for dealing with significant bipolar glenohumeral bone loss. The combined procedure deserves consideration in high-risk patients including combined bone loss, recurrent anterior instability after failed stabilization procedures and/or seizure.