title: The use of hydroxyapatite-coated CAD-CAM femoral components in adolescents and young adults with inflammatory polyarthropathy: ten-year results.
abstract: Between June 1991 and January 1995, 42 hydroxyapatite-coated CAD-CAM femoral components were inserted in 25 patients with inflammatory polyarthropathy, 21 of whom had juvenile idiopathic arthritis. Their mean age was 21 years (11 to 35). All the patients were reviewed clinically and radiologically at one, three and five years. At the final review at a mean of 11.2 years (8 to 13) 37 hips in 23 patients were available for assessment. A total of four femoral components (9.5%) had failed, of which two were radiologically loose and two were revised. The four failed components were in patients aged 16 years or less at the time of surgery. Hydroxyapatite-coated customized femoral components give excellent medium- to long-term results in skeletally-mature young adults with inflammatory polyarthropathy. Patients aged less than 16 years at the time of surgery have a risk of 28.5% of failure of the femoral component at approximately ten years.
authors.affiliation: The North West London Hospitals, NHS Trust, Northwick Park Hospital, Watford Road, Harrow, Middlesex HA1 3UJ, UK. dinad@btopenworld.com
authors.forename: C J
authors.initials: CJ
authors.lastname: McCullough
authors.forename: D
authors.initials: D
authors.lastname: Remedios
authors.forename: G
authors.initials: G
authors.lastname: Tytherleigh-Strong
authors.forename: J
authors.initials: J
authors.lastname: Hua
authors.forename: P S
authors.initials: PS
authors.lastname: Walker
mesh_terms: D000293:Adolescent; D000328:Adult; D001168:Arthritis / Q000601:surgery*; D001171:Arthritis, Juvenile / Q000000981:diagnostic imaging / Q000601:surgery; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D001672:Biocompatible Materials; D002648:Child; D002675:Child, Preschool; D017076:Computer-Aided Design; D017886:Durapatite; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D011859:Radiography; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D017886:Durapatite