title: [Analysis of 10-year survival after flexion osteotomy for femoral head necrosis].
abstract: OBJECTIVE
  We have investigated the value of flexion osteotomy for femoral head necrosis with regard to the survival rate.
  
  
  METHODS
  We examined 40 patients who were treated by flexion osteotomy for femoral head necrosis at the Hannover Medical School in the years 1969 to 1995. The mean follow-up period was 14.1 years.
  
  
  RESULTS
  The mean survival time of the flexion osteotomies was 9.6 years. In 23 of the 40 patients, it failed within 10 years after surgery, which implies a 10-year survival rate of 42.5 %. For these 23 patients, the implantation of a total hip arthroplasty (THA) became necessary after an average time of 6.6 years.
  
  
  CONCLUSIONS
  Due to the poorly predictable success of the flexion osteotomy and the comparatively poor patient satisfaction, the indication for flexion osteotomy in such cases should be reconsidered.
authors.affiliation: Orthopädische Klinik, Medizinische Hochschule Hannover.
authors.forename: F
authors.initials: F
authors.lastname: Reck
authors.forename: F
authors.initials: F
authors.lastname: Thorey
authors.forename: G V
authors.initials: GV
authors.lastname: Lewinski
authors.forename: H
authors.initials: H
authors.lastname: Windhagen
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D018572:Disease-Free Survival; D005260:Female; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging* / Q000601:surgery*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods*; D011859:Radiography; D017211:Treatment Failure; D016896:Treatment Outcome