title: Modern dual-mobility cup implanted with an uncemented stem: about 100 cases with 12-year follow-up.
abstract: We report the results of a 12-year follow-up retrospective series of 100 total hip arthroplasties using cementless, press-fit, dual-mobility acetabular cups. The aim of our study was to evaluate the clinical and radiographic results of this acetabular cup at last follow-up. This continuous and homogeneous series included 100 primary total hip arthroplasties performed during the year 2000. The THA combined a Corail® stem (Corail®, Depuy, Warsaw, IN) with a stainless steel Novae Sunfit® (Serf, Decines, France) acetabular cup. Fifteen patients died and 2 were lost to follow-up. Two cases of early dislocation were observed, and 3 cases of aseptic loosening of the acetabular component were reported. The mean stem subsidence was 0.71 mm, the mean craniopodal acetabular migration was 1.37 mm, and the mean medio-lateral acetabular migration was 1.52 mm. The 12-year survivorship is comparable to the data from the literature. The low dislocation rate at 12 years confirms the long-term, high stability of dual mobility, which should be recommended in primary THA for patients at risk for postoperative instability. The absence of true intraprosthetic dislocation events at 12-year follow-up provides evidence of the good quality of the latest generation of polyethylene liners and the necessity of combining thin-mirror, polished femoral necks with dual-mobility cups.
authors.affiliation: University of Saint Etienne Saint Etienne, France.
authors.forename: Remi
authors.initials: R
authors.lastname: Philippot
authors.affiliation: University of Saint Etienne Saint Etienne, France.
authors.forename: Jean Francois
authors.initials: JF
authors.lastname: Meucci
authors.affiliation: University of Saint Etienne Saint Etienne, France.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Boyer
authors.affiliation: University of Saint Etienne Saint Etienne, France.
authors.forename: Frederic
authors.initials: F
authors.lastname: Farizon
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000706:statistics & numerical data*; D002484:Cementation; D019544:Equipment Failure Analysis; D005260:Female; D005500:Follow-Up Studies; D005602:France / Q000453:epidemiology; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis / Q000706:statistics & numerical data*; D006801:Humans; D007592:Joint Diseases / Q000453:epidemiology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology*; D015995:Prevalence; D011474:Prosthesis Design; D012086:Reoperation; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome