title: Ten year results of the collum femoris preserving total hip replacement: a prospective cohort study of seventy five patients.
abstract: OBJECTIVE
  The collum femoris preserving (CFP) uncemented prosthesis has a bone-preserving, high subcapital neck resection and a short anatomical stem. The ideal arthroplasty option in the younger, active patient is a subject of some debate. We evaluated midterm outcomes of the CFP in this patient population.
  
  
  METHODS
  A prospective, consecutive cohort of 75 CFP total hip replacement (THR) patients with a mean age of 52 years was followed for a mean of 9.3 years. Patients were assessed using the Harris Hip Score (HHS). Pain was assessed using a visual analogue scale (VAS) and activity levels using the University of California, Los Angeles (UCLA) score. Radiographs were evaluated for evidence of loosening. Survivorship was calculated with an endpoint of revision for aseptic loosening or radiographic evidence of loosening.
  
  
  RESULTS
  Mean HHS improved from a mean of 50 pre-operatively to 91 (p < 0.001) postoperatively. Mean pain score was 1, mean patient satisfaction was 9 and mean UCLA score was 6. Two acetabular components were revised for aseptic loosening; no stem required revision. Radiographically, no cases had evidence of loosening. Survivorship was 96.8 % for the acetabular component and 100 % for the stem at ten years. Three patients died from unrelated causes, and five were lost to follow-up.
  
  
  CONCLUSIONS
  Bone-preserving hip replacement has increased in popularity as hip replacement in younger and more active individuals increases. The CFP prosthesis has excellent midterm clinical function and survival and provides high levels of satisfaction in young patients.
authors: Trauma & Orthopaedics, Croydon University Hospital, Croydon, UK.
authors: Jonathan
authors: J
authors: Hutt
authors: Ziad
authors: Z
authors: Harb
authors: Ian
authors: I
authors: Gill
authors: Fadhil
authors: F
authors: Kashif
authors: John
authors: J
authors: Miller
authors: Matthew
authors: M
authors: Dodd
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D015331:Cohort Studies; D005260:Female; D005272:Femur Neck; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D059351:Organ Sparing Treatments; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013997:Time Factors