title: Multiple cannulated screw fixation of young femoral neck fractures.
abstract: OBJECTIVE
  We wanted to analyze the factors affecting the results of multiple cannulated screws fixation in patients less than 60 years old with femoral neck fracture (FNF).
  
  
  METHODS
  We reviewed 52 patients (30 males, 22 females) who were treated with multiple cannulated screws fixation for FNFs. They were followed up for more than one year during January 2002 to December 2012. They were classified by Garden's classification. The anatomic reduction was evaluated by Garden's alignment index on hip both anteroposterior and lateral images. Postoperative complications were analyzed during follow up periods.
  
  
  RESULTS
  By Garden's classification, 6 cases were in stage I, 13 cases in stage II, 30 cases in stage III and 3 cases in stage IV. During follow up periods, avascular necrosis of the femoral head was observed in 12 cases (23%) and nonunion was observed in 5 cases (9%). The 16 patients who had complications underwent total hip arthroplasty (31%). In non-displaced fracture groups (Garde I, II) did not have AVN nor nonunion. The incidence of complications in displaced fracture group was 51.5%. The complicated cases showed tendency for increased apex anterior angulation of femoral neck on hip lateral images and the result was statistically significant. (p=0.0260).
  
  
  CONCLUSIONS
  The patients less than 60 years old who were treated with multiple cannulated screws fixation for displaced FNFs showed the incidence of complications was more than 50%. It needs a cautious approach for anatomical reduction, especially related to anterior angulation on hip lateral image.
authors: Joo Yong Kim, MD. Dept. of Orthopaedic Surgery, Busan Paik Hospital College of Medicine, Inje University, Bokjiro 75, Busanjin Gu, Busan, 633-165, Korea.
authors: Joo Yong
authors: JY
authors: Kim
authors: Gyu Min Kong, MD. PhD. Dept. of Orthopaedic Surgery, Busan Paik Hospital College of Medicine, Inje University, Bokjiro 75, Busanjin Gu, Busan, 633-165, Korea.
authors: Gyu Min
authors: GM
authors: Kong
authors: Dae Hyun Park, MD. Dept. of Orthopaedic Surgery, Busan Paik Hospital College of Medicine, Inje University, Bokjiro 75, Busanjin Gu, Busan, 633-165, Korea.
authors: Dae Hyun
authors: DH
authors: Park
authors: Dae Yoo Kim MD. Dept. of Orthopaedic Surgery, Busan Paik Hospital College of Medicine, Inje University, Bokjiro 75, Busanjin Gu, Busan, 633-165, Korea.
authors: Dae Yoo
authors: DY
authors: Kim
keywords: Avascular necrosis; Femoral neck fracture; Multiple screw fixation; Nonunion