title: Hip resurfacing in a district general hospital: 6-year clinical results using the ReCap hip resurfacing system.
abstract: BACKGROUND
  The purpose of our study was to prospectively report the clinical results of 280 consecutive hips (240 patients) who received a ReCap Hip Resurfacing System implant (Biomet Inc., Warsaw, USA) in a single district general hospital. Literature reports a large variation in clinical results between different resurfacing designs and published results using this particular design are scarce.
  
  
  METHODS
  Mean follow up was 3.3 years (1.0 to 6.3) and four patients were lost to follow-up. All patients were diagnosed with end-stage hip osteoarthritis, their mean age was 54 years and 76.4% of all patients were male.
  
  
  RESULTS
  There were 16 revisions and four patients reported a Harris Hip Score <70 points at their latest follow up. There were no pending revisions. Kaplan-Meier implant survival probability, with revision for any reason as endpoint, was 93.5% at six years follow-up (95%-CI: 88.8-95.3). There were no revisions for Adverse Reactions to Metal Debris (ARMD) and no indications of ARMD in symptomatic non-revised patients, although diagnostics were limited to ultrasound scans.
  
  
  CONCLUSIONS
  This independent series confirms that hip resurfacing is a demanding procedure, and that implant survival of the ReCap hip resurfacing system is on a critical level in our series. In non-revised patients, reported outcomes are generally excellent.
  
  
  BACKGROUND
  ClinicalTrials.gov Identifier: NCT00603395.
authors.affiliation: Department of Orthopaedic Surgery, St. Anna Hospital, Bogardeind 2, Geldrop, Netherlands. kog@st-anna.nl
authors.forename: Walter
authors.initials: W
authors.lastname: van der Weegen
authors.forename: Henk J
authors.initials: HJ
authors.lastname: Hoekstra
authors.forename: Thea
authors.initials: T
authors.lastname: Sijbesma
authors.forename: Shennah
authors.initials: S
authors.lastname: Austen
authors.forename: Rudolf W
authors.initials: RW
authors.lastname: Poolman
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006767:Hospitals, District / Q000639:trends*; D006769:Hospitals, General / Q000639:trends*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging* / Q000601:surgery*; D011446:Prospective Studies; D011859:Radiography; D016896:Treatment Outcome