title: [Treatment of intertrochanteric fractures with dynamic hip screw and femoral neck anti-rotation screw].
abstract: OBJECTIVE
  To investigate the application of anti-rotation screw after dynamic hip screw (DHS) in treatment of intertrochanteric fracture.
  
  
  METHODS
  Between April 2006 and January 2010, 22 cases of intertrochanteric fractures underwent DHS fixation operation with an anti-rotation screw, including 15 males and 7 females with an average age of 66.3 years (range, 54-83 years). Fractures were caused by slipping in 16 cases, traffic accident in 5 cases, and falling from height in 1 case. All cases showed closed fractures, including 13 cases in the left and 9 cases in the right. Eighteen cases were simple intertrochanteric fracture, 4 cases were intertrochanteric fractures complicated with Colles fractures. According to Evans classification standard, there were 14 cases of type I, 6 cases of type II, 1 case of type III, and 1 case of type IV. The time from wound to operation was 3-7 days (mean, 4.5 days).
  
  
  RESULTS
  The operation time ranged from 51-95 minutes (mean, 72 minutes). The intraoperative blood loss was 150-350 mL (mean, 270 mL). The hospitalization days were 12-35 days (mean, 16.8 days). Primary healing was observed in all cases. All cases were followed up 6-17 months (mean, 14 months). Union of fracture was observed at 12-16 weeks (mean, 13.6 weeks); no fracture or internal fixation loosening occurred. According to HUANG Gongyi's standard of efficacy assessment, the results were excellent in 19 cases and good in 3 cases.
  
  
  CONCLUSIONS
  Application of an anti-rotation screw can help to improve the strength of the DHS for the internal fixation of intertrochanteric fracture, especially the anti-rotation ability, which does not increase the operation time obviously.
authors.affiliation: Department of Orthopedics, Zhujiang Hospital, Nanfang Medical University, Guangzhou Guangdong, 510282, P.R.China.
authors.forename: Chenglong
authors.initials: C
authors.lastname: Liu
authors.forename: Qi
authors.initials: Q
authors.lastname: Li
authors.forename: Jiancheng
authors.initials: J
authors.lastname: Yang
authors.forename: Anmin
authors.initials: A
authors.lastname: Jin
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation* / Q000379:methods*; D006620:Hip Fractures / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome