title: Mechanical complications associated with the use of the unreamed AO femoral intramedullary nail with spiral blade: first experiences with thirty-five consecutive cases.
abstract: OBJECTIVE
  To evaluate the unreamed femoral nail with spiral blade (UFN-SB) in the treatment of subtrochanteric femur fractures.
  
  
  METHODS
  Retrospective review of a consecutive series of twenty-eight fractures. Sixteen patients had metastatic disease.
  
  
  METHODS
  Academic teaching hospital.
  
  
  METHODS
  Clinical and radiographic examination.
  
  
  RESULTS
  Five mechanical complications were observed in four patients. In one patient with a metastastic fracture, we noted a breakage of the SB twice. In patients with traumatic subtrochanteric fracture, migration of the SB was observed three times, needing reintervention twice.
  
  
  CONCLUSIONS
  Although this implant is useful in the treatment of subtrochanteric femur fractures, it is our contention that the problem of subtrochanteric fracture fixation is not solved with this implant, especially in elderly osteoporotic patients who require early weight bearing.
authors.affiliation: Department of Traumatology and Emergency Surgery, University Hospital Gasthuisberg, Leuven, Belgium.
authors.forename: P L
authors.initials: PL
authors.lastname: Broos
authors.forename: P
authors.initials: P
authors.lastname: Reynders
authors.forename: K
authors.initials: K
authors.lastname: Vanderspeeten
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005264:Femoral Fractures / Q000601:surgery*; D005594:Fracture Fixation, Intramedullary / Q000009:adverse effects* / Q000295:instrumentation*; D006620:Hip Fractures / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure; D012189:Retrospective Studies