Abstract
Introduction:
Reverse shoulder arthroplasty (RSA) is a reasonable treatment modality in patients with Cuff Tear Arthropaty and massive irreparable cuff tears. RSA has been shown to increase patient function and decrease pain. The aim of this study is to evaluate the clinical and radiographic results of a 44 polyethylene glenosphere.
Methods:
Since 2008 we treated 88 patients with cuff tear arthropaty and irreparable massive cuff tear, using an RSA. We selected 80 patients with minimum FU of 24 months in which we used an implant with polyethylene glenosphere and metal humeral insert. Size of the glenosphere used was 44. All patients were assessed with the Constant score and with VAS. The shoulder ROM was measured preoperatively and postoperatively.
Results:
Average age of the patients was 71 years old. Average duration of FU was 34 months. All measures improved significantly (p < 0.0001). The mean Constant improved from 15.6 to 60.2. VAS improved from 6 to 2,5. Forward flexion increased from 40 ° to 126,4 °, abduction from 41 ° to 103 °, external rotation from 15.1 to 17.3 and internal rotation increased by two level. We report 22 cases of scapular notching without clinical influence and without implant mobilization.
Conclusion:
This is the first report of the use of a polyethylene glenosphere. Data from this study suggest that RSA with a polyethylene glenosphere may be a viable treatment for patients with glenohumeral arthritis and a massive rotator cuff tear. Future studies will be necessary to determine the longevity of the implant and whether it will provide continued improvement in function.
