title: [Screwed acetabulum: results of 72 cases with a mean follow-up of 5 years].
abstract: Ninety-seven threaded acetabular prostheses (44 cups of Lord and 53 Motta, type cups) were implanted among which 72 were examined at an average follow-up of 5.9 years. After an initial phase of good tolerance, the results became rapidly degraded. Clinically, the lack of fixation was translated by a start up pain. On examination, the pain provoked by the opposed hip flexion was pathognomonic. A radiographic analysis of our checks allowed us to classify them in four types: Type I: painful hip, normal radiography or presence of a radiolucent line in one of the DeLee's zones; increased uptake at bone scanning. Type II: total radiolucent demarcation; Type III: axial migration; Type IV: migration and tilting; Finally analysis of our series with Kaplan-Meier method showed a survivorship rate at five years of 59.3 per cent. It is concluded that this kind of implant must be abandoned.
authors.affiliation: Service d'Orthopédie, Hôpital Pellegrin, Bordeaux.
authors.forename: J F
authors.initials: JF
authors.lastname: Chauvet
authors.forename: X
authors.initials: X
authors.lastname: Pascarel
authors.forename: J
authors.initials: J
authors.lastname: Bosredon
authors.forename: J L
authors.initials: JL
authors.lastname: Honton
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000328:Adult; D001863:Bone Screws; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies; D016019:Survival Analysis
vernacular_title: Cotyles vissés: résultats de 72 cas avec un recul moyen de cinq ans.