title: Relevance of a press-fit dual mobility cup to deal with recurrent dislocation of conventional total hip arthroplasty: a 29-case series.
abstract: The aim of this paper was to assess the impact on stability of revision of 29 standard acetabular cups to press-fit uncemented dual mobility (DM) cups in THAs with recurrent dislocation. This series was composed of 17 women and 12 men aged on average 75.6 ± 8.1 years (55-88), operated on between November 2000 and July 2010. The average number of dislocations before revision surgery was 3.87 ± 1.79 (2-10), and the average time from primary procedure to revision was 6.6 ± 4.3 years (45-15 years). 9 patients (31.03 %) had already undergone one or more procedures for instability prior to revision to DM cup. All patients were reviewed at an average time of 46 ± 28 months (range: 17 months-11 years). Only one patient had redislocated in this time (3.4 %). This patient underwent a simple closed reduction and did not dislocate again.
  
  
  METHODS
  IV retrospective cohort study.
authors: Department of Orthopaedic Surgery and Sport Traumatology, Grenoble South Teaching Hospital, 38130, Échirolles, France. DSaragaglia@chu-grenoble.fr
authors: D
authors: D
authors: Saragaglia
authors: S
authors: S
authors: Ruatti
authors: R
authors: R
authors: Refaie
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods; D005260:Female; D006617:Hip Dislocation / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology / Q000503:physiopathology; D006622:Hip Prosthesis / Q000009:adverse effects / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D017063:Outcome Assessment, Health Care; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012086:Reoperation / Q000379:methods / Q000706:statistics & numerical data; D012189:Retrospective Studies; D055502:Secondary Prevention; D006113:United Kingdom