Metal-on-metal hip arthroplasty does equally well in osteonecrosis and osteoarthritis.
Clin Orthop Relat Res
; 466(5): 1148-53, 2008 May.
Article
em En
| MEDLINE
| ID: mdl-18350348
ABSTRACT
Many previous reports suggest total hip arthroplasty performs suboptimally in young patients with osteonecrosis. We retrospectively compared the performance of metal-on-metal articulation in a select group of 107 patients with 112 hips (98 uncemented and 14 cemented stems) 60 years of age or younger with either osteonecrosis (27 patients, 30 hips) or primary osteoarthritis (80 patients, 82 hips). We evaluated all patients with patient-generated Harris hip score forms and serial radiographs. Five mechanical complications were caused by impingement, two with pain, two dislocations, and one liner dissociation. At a minimum followup of 2.2 years (mean, 5.5 years; range, 2.2-11.7 years), we observed no osteolysis or aseptic loosening in the osteonecrosis group, whereas one osteoarthritic hip had cup revision for loosening (none showed evidence of osteolysis). None of the stems were loose. Patients with osteonecrosis or primary osteoarthritis were similar in clinical and radiographic performance. The patients with metal-on-metal hip arthroplasty for osteonecrosis had no revisions for aseptic loosening, but did have one liner change in a cup for painful impingement.
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Base de dados:
MEDLINE
Assunto principal:
Osteonecrose
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Osteoartrite do Quadril
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Artroplastia de Quadril
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Articulação do Quadril
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Prótese de Quadril
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Metais
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article