title: Outcome of primary total hip arthroplasty in Charnley Class C patients with juvenile idiopathic arthritis: a case series.
abstract: The outcome and complications of 37 primary total hip arthroplasties by one surgeon in 24 patients with Charnley Class C juvenile idiopathic arthritis with up to 19.6 years follow-up are reported. Twenty-six femoral components were cementless; all acetabular components were cementless with screws. Age at operation averaged 22.6 years. Two patients (3 hips) have died. Twelve hips in 9 patients have failed. Six cementless acetabular components with conventional polyethylene were revised because of osteolysis after 5.5 to 14.5 years. All 3 cementless C2 femoral stems with minimal porous coating failed. One of eight cemented AML Bantam stems loosened at 3.5 years; 2 of 23 cementless AML Bantam stems loosened at 9.5 and 19.6 years. Pain relief and functional improvement are dramatic after total hip arthroplasty in juvenile idiopathic arthritis; however, the long-term outcome is guarded.
authors.affiliation: Department of Orthopaedic Surgery, Stanford University Schoolof Medicine, Stanford, California, USA.
authors.forename: Aladino
authors.initials: A
authors.lastname: De Ranieri
authors.forename: Nicholas
authors.initials: N
authors.lastname: Wagner
authors.forename: Susanna N
authors.initials: SN
authors.lastname: Imrie
authors.forename: Katherine L
authors.initials: KL
authors.lastname: Hwang
authors.forename: Stuart B
authors.initials: SB
authors.lastname: Goodman
mesh_terms: D000293:Adolescent; D000328:Adult; D001171:Arthritis, Juvenile / Q000601:surgery*; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods*; D001863:Bone Screws; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis / Q000145:classification*; D006801:Humans; D015994:Incidence; D008297:Male; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies; D016896:Treatment Outcome; D055815:Young Adult