Outcome of a hemispherical porous-coated acetabular component with a proximally hydroxyapatite-coated anatomical femoral component: a 12- to 15-year follow-up study.
We reviewed 111 hemispherical Duraloc series-500 acetabular components with a minimum follow-up of 12 years. The mean clinical and radiological follow-up was 13.4 years (12 to 15). A Profile hydroxyapatite-coated anatomical femoral component was used in each case. Six patients had a late dislocation, for whom the polyethylene liner was exchanged. Each acetabular component was well fixed and all femoral components showed signs of bone ingrowth. The mean rate of femoral head penetration was 0.10 mm/year (0.021 to 0.481). The probability of not developing femoral cortical hypertrophy and proximal osteopenia by 12 years was 80.2% (95% confidence interval, 72.7 to 87.6) and 77.5% (95% confidence interval, 69.7 to 85.2), respectively. Despite these good clinical results, further follow-up is needed to determine whether these prostheses will loosen with time.
García-Rey
E
E
Orthopaedic Surgery, Hospital La Paz, Madrid, Spain. edugrey@yahoo.es
García-Cimbrelo
E
E
Cordero-Ampuero
J
J
D000077:Acetabulum / Q000601:surgery; D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D020099:Coated Materials, Biocompatible; D017886:Durapatite; D005260:Female; D005270:Femur Head / Q000000981:diagnostic imaging; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000209:etiology; D016062:Porosity; D011474:Prosthesis Design; D011859:Radiography; D016896:Treatment Outcome; D055815:Young Adult
D020099:Coated Materials, Biocompatible; D017886:Durapatite