title: Twin hook fixation for proximal femoral fractures.
abstract: OBJECTIVE
  To report results of twin hook fixation for proximal femoral fractures in comparison to those fixed with the conventional lag screw.
  
  
  METHODS
  Between August 2005 and July 2006, 2 men and 15 women aged 74 to 94 (mean, 85) years with proximal femoral fractures underwent open reduction and internal fixation using the twin hook system. The tip-apex distance was compared with that in 20 patients treated with the sliding hip screw between August 2004 and July 2005.
  
  
  RESULTS
  In the 17 patients, the hook was inserted into the centre of the femoral head. Bone union was achieved and no intra- or post-operative cut-out or device failure was encountered. In patients using the twin hook and sliding hip screw respectively, the mean tip-apex distance was 22.3 mm and 14.6 mm (p<0.001).
  
  
  CONCLUSIONS
  Using the twin hook system requires more surgical skill than using the sliding hip screw, because failure to insert the pin into the centre of the femoral head risks intra-articular perforation by the hooks.
authors: Department Orthopaedic Surgery, National Hospital Organization, Kofu National Hospital, and Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan. tmhagino@amber.plala.or.jp
authors: T
authors: T
authors: Hagino
authors: S
authors: S
authors: Ochiai
authors: M
authors: M
authors: Wako
authors: E
authors: E
authors: Sato
authors: S
authors: S
authors: Maekawa
authors: Y
authors: Y
authors: Hamada
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D005260:Female; D005264:Femoral Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D016268:Internal Fixators; D008297:Male; D011474:Prosthesis Design; D011859:Radiography; D016896:Treatment Outcome