title: [Application of CFP short-stem prosthesis in the treatment of osteonecrosis of the femoral head].
abstract: OBJECTIVE
  To investigate the clinical outcome for the treatment of osteonecrosis of the femoral head (ONFH) in advanced stage by a short-stem prosthesis preserving femoral neck in total hip arthroplasty (THA).
  
  
  METHODS
  From June 2008 to December 2009, 9 hips in 8 patients with advanced stage of ONFH were treated by a short-stem preserving femoral neck in THA. The mean age was 24.1 years (range: 20 - 36). There were 3 patients (3 hips) with alcohol-induced ONFH and 5 patients (6 hips) with steroid-induced ONFH. According to the classification of Association Research Circulation Osseous (ARCO), 7 hips were in stage III-C and 2 hips in stage IV respectively. The clinical outcomes were evaluated according to the Harris evaluation score and radiographic analysis.
  
  
  RESULTS
  All patients were followed up for a mean duration of 18.1 months (range: 12 - 30). The mean Harris hip score improved from preoperative (42.8 ± 8.6) points to (92.8 ± 6.1) points at the time of final follow-up. The outcomes were excellent in 7 hips and better in 2 hips. Neither osteolysis of mortar and femur nor loose component was found from radiological films. The pain of all hips disappeared and no complications occurred.
  
  
  CONCLUSIONS
  The short-term clinical outcome is satisfactory for treating young patients with advanced stage of ONFH by a short-stem prosthesis preserving femoral neck in THA.
authors.affiliation: Department of Orthopedic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China. wangyisheng@zzu.edu.cn
authors.forename: Yi-sheng
authors.initials: YS
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.forename: Jun-wei
authors.initials: JW
authors.lastname: Li
authors.forename: Ying-jie
authors.initials: YJ
authors.lastname: Hao
authors.forename: Jin-feng
authors.initials: JF
authors.lastname: Li
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Guang-hui
authors.initials: GH
authors.lastname: Li
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D055815:Young Adult