Hemiarthroplasty for osteoarthritis in shoulder with dysplastic morphology.
OBJECTIVE
Hemiarthroplasty for shoulder osteoarthritis with a glenoid dysplasia gives satisfactory results at medium-range follow-up.


METHODS
From 1998 to 2006, 9 patients (10 shoulders) with glenoid dysplasia and osteoarthritis were treated with shoulder hemiarthroplasty. The mean age at surgery was 54 years (range, 44-73 years). At a minimum of 24 months after surgery, all patients were retrospectively reviewed with a clinical and radiographic evaluation. The average duration of follow-up was 71 months (range, 28-126 months).


RESULTS
One shoulder underwent revision surgery for anterior dislocation within 6 months after the initial procedure. The pain level improved significantly, with no or slight pain for 9 of the 10 shoulders. Postoperatively active external rotation and anterior elevation increased significantly, with a mean of 34.5° and 124°, respectively. The average American Shoulder and Elbow Surgeons score was 81.5 points at the last follow-up, and results were considered as excellent or satisfactory in 7 shoulders according to the modified Neer rating scale. Erosion of the glenoid was considered as slight on radiographs, and radiolucencies were seen around humeral stem in one case.


CONCLUSIONS
The opportunity of glenoid component implantation in case of anatomic shoulder replacement with dysplastic morphology has to be carefully evaluate because of bone stock insufficiency, glenoid orientation, and the age of patients.


CONCLUSIONS
Despite a limited number of patients in this study, hemiarthroplasty gave satisfactory clinical results in most cases. It seems to be a reliable option to treat osteoarthritis in case of dysplastic morphology of shoulder.
Service d'Orthopédie-Traumatologie, Centre Hospitalier Universitaire de Toulouse-Purpan, Toulouse, France. nicolasbonnevialle@yahoo.fr
Nicolas
N
Bonnevialle
Pierre
P
Mansat
Michel
M
Mansat
Paul
P
Bonnevialle
D000328:Adult; D000368:Aged; D019643:Arthroplasty, Replacement / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D012785:Shoulder Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*