title: Treatment of Intertrochanteric Fractures Using the Compression Hip Nail.
abstract: OBJECTIVE
  To investigate the clinical and radiologic outcomes following treatment of intertrochanteric fractures using the Compression Hip Nail® (CHN), which has a sliding lag screw.
  
  
  METHODS
  Twenty-eight cases of intertrochanteric fractures treated with CHN from November 2012 to October 2013 and followed-up for >6 months were included. The patient population consisted of 11 men and 17 women with a mean age of 75.2 years at the time of surgery. For the initial 11 cases, 10 mm sliding lag screws were used; the remaining 17 cases used 20 mm sliding lag screws. Clinical variables including operation time, amount of transfusion, weight-bearing start time, postoperative physical activity, and complications were investigated. The average sliding of lag screws and the average union were investigated radiologically at 3 and 6 months after surgery.
  
  
  RESULTS
  In an analysis of 23 cases (exclusion of 3 cases of lag screw cutout and 2 cases of nonunion), 11 (48%) recovered their pre-injury activity level. In an analysis of 25 cases (exclusion of 3 cases of cutout), 17 (68%) and 23 (92%) showed radiological union at postoperative months 3 and 6, respectively. Seven complications were noted. Cutout of the lag screw and the lateral protrusion of barrels were significantly greater in the group with 10 mm sliding lag screws as compared to the group using 20 mm sliding lag screws.
  
  
  CONCLUSIONS
  The use of CHN for the treatment of intertrochanteric fracture yielded poor results. However, results from patients in the 20 mm sliding lag screw group were better than for the 10 mm sliding lag screw group. Therefore, use of the 20 mm sliding lag screw is advisable.
authors.affiliation: Department of Orthopaedic Surgery, Kangwon National University College of Medicine, Chuncheon, Korea.
authors.forename: Je-Min
authors.initials: JM
authors.lastname: Yi
authors.affiliation: Department of Orthopaedic Surgery, Kangwon National University College of Medicine, Chuncheon, Korea.
authors.forename: Kye Young
authors.initials: KY
authors.lastname: Han
authors.affiliation: Department of Orthopaedic Surgery, Kangwon National University College of Medicine, Chuncheon, Korea.
authors.forename: Keun Woo
authors.initials: KW
authors.lastname: Kim
authors.affiliation: Department of Orthopaedic Surgery, Kangwon National University College of Medicine, Chuncheon, Korea.
authors.forename: Chang Hyun
authors.initials: CH
authors.lastname: Ryu
keywords: Compression hip nail; Femur; Intertrochanteric fractures