title: [Therapeutic effects of cannulated compression screws for treating femoral neck fractures].
abstract: OBJECTIVE
  To explore the relevant factor of cannulated compression screws in treating femoral neck fractures.
  
  
  METHODS
  From January 2004 to January 2011, 190 patients with femoral neck fractures treated by cannulated compression screws were analyzed retrospectively. In all of the 190 cases, there were 104 males and 86 females with an average of 65 years (ranged, 21 to 83 years). According to Garden classification system, 25 cases were type I, 51 cases were type II, 58 cases were type II and 56 cases were type IV. The time from injury to operation was 15 h to 10 d (mean 3.5 d). The gender,age, trauma type, fracture type, osteoporosis, emergency operation, fracture reduction, relation between open reduction and nonunion were observed and analyzed.
  
  
  RESULTS
  All patients were followed-up for 12 to 84 months, with a mean of 38 months. All incisions obtained stage I healing. There were 23 patients with bone nonunion. The rate of nonunion was 12.1%. Single factor analysis showed that there were significant differences in age, trauma type, fracture type, fracture reduction and osteoporosis (P<0.05), but no meaning in gender, emergency operation, relation between open reduction and nonunion (P>0.05).
  
  
  CONCLUSIONS
  Cannulated compression screws for femoral neck fractures can obtain good outcomes, and age, trauma type, fracture type, fracture reduction and osteoporosis are main factors.
authors.affiliation: Department of Orthopaedics, Chongzuo People's Hospital, Chongzuo 532200, Guangxi, China.
authors.forename: Qing-Hong
authors.initials: QH
authors.lastname: Lu
authors.forename: Feng-Ping
authors.initials: FP
authors.lastname: Yu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D005260:Female; D005265:Femoral Neck Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D055815:Young Adult