title: [Total hip replacement with collum femoris preserving for the treatment of advanced stage of femoral head necrosis of young patients: a report of results of more than five years follow-up].
abstract: OBJECTIVE
  To observe the results of total hip replacement with collum femoris preserving for the treatment of advanced stage of femoral head necrosis of youth.
  
  
  METHODS
  From August 2002 to November 2009, 21 patients (28 hips) with advanced stage of femoral head necrosis were treated with total hip replacement with collum femoris preserving. Sixteen males (22 hips) and 5 females (6 hips) with an average age of 36 years (range from 26 to 51 years) were included. All patients were evaluated clinically using Harris score, the prosthesis components were assessed for position, loosening, bone resorption and other conditions with radiographs.
  
  
  RESULTS
  Nineteen patients (26 hip) were followed up for mean 5 years and 7 months (ranging 5 years and 3 months to 7 years and 1 month), 2 patients were missed. The average Harris score increased from the preoperative average 48.5 to 90.2. The leg-length discrepancy (the difference was less than 2 cm) occurred in 3 cases. No thigh pain and revision.
  
  
  CONCLUSIONS
  Total hip arthroplasty with collum femoris preserving is one of the best choices for the treatment of advanced stage of femoral head necrosis of young patients with good midterm outcome.
authors.affiliation: Department of Orthopaedics, Affiliated Anhui Provincial Hospital of Anhui Medical University, Hefei, China. 99001261@163.com
authors.forename: Xi-fu
authors.initials: XF
authors.lastname: Shang
authors.forename: Rui
authors.initials: R
authors.lastname: He
authors.forename: Yu-feng
authors.initials: YF
authors.lastname: Lu
authors.forename: Fei
authors.initials: F
authors.lastname: Hu
authors.forename: Ya-lin
authors.initials: YL
authors.lastname: Zhu
authors.forename: Qi-chun
authors.initials: QC
authors.lastname: Zhao
authors.forename: Gang
authors.initials: G
authors.lastname: Yao
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery*; D005272:Femur Neck / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D016896:Treatment Outcome