title: Our early experience of the Corin Minihip prosthesis.
abstract: OBJECTIVE
  Although there have been several varieties of short-stem hip prosthesis in the market, there have been no published clinical results of the Corin MiniHip (Corin, Cirencester, UK) to date. The aim of this study is to describe our early results and experience of this stem in a nondesigner, single-surgeon series; calculate 5-year survival with stem revision as an endpoint; evaluate complications and early revisions; and assess radiolucency and stem subsidence at the latest follow-up review.
  
  
  METHODS
  Over a 5-year period, 275 MiniHip were implanted in 239 patients. The mean age of the patients was 63 years (range 20-84); mean follow-up was 37 months (range 12-72 months).
  
  
  RESULTS
  The mean Harris Hip Score and Oxford Hip Score improved significantly to 87 (range 49-100) and 41 (range 32-48) at the final follow-up (p = 0.038; p = 0.017). There were 9 intraoperative calcar fractures (3%) of which only 1 required cerlage wiring. 10 patients died in our series and none were lost to follow-up. 2 patients had their stem revised for failure of fixation (secondary to possible undersizing) and sink. The risk of revision was 0.73% at 5 years. The Kaplan Meier estimate of survivorship of cumulative failure gave an implant survival rate of 99.3% (95% confidence interval [CI], 27.0-100) at 5 years for revision for any reason as the endpoint.
  
  
  CONCLUSIONS
  This novel, short-stem prosthesis has shown good survival in the short term, similar to other short-stem prostheses currently available. We describe the largest series in the literature of this prosthesis.
authors.affiliation: South Wales Orthopaedics Research Network, WelshBone, Cardiff - UK.
authors.forename: Kar H
authors.initials: KH
authors.lastname: Teoh
authors.affiliation: South Wales Orthopaedics Research Network, WelshBone, Cardiff - UK.
authors.forename: Paul Y F
authors.initials: PY
authors.lastname: Lee
authors.affiliation: The Arthroplasty Unit, Department of Trauma and Orthopaedics, Morriston Hospital, Swansea - UK.
authors.forename: David J
authors.initials: DJ
authors.lastname: Woodnutt
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D015331:Cohort Studies; D016208:Databases, Factual; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation / Q000706:statistics & numerical data; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult