title: A special instrument to accurately and safely remove the femoral head.
abstract: BACKGROUND
  Intracapsular hip fractures occur frequently, and most of them need operation. But current femoral head removal instruments used in the operation have many disadvantages. We optimized them.
  
  
  METHODS
  We added a sleeve to the cork screw to strengthen the torque created by it. A scale is also added to the joint of the sleeve and the cork screw, which can be used to measure the depth of insertion.
  
  
  CONCLUSIONS
  The optimized instrument decreased the risk and saved the time of operation.
authors.affiliation: Department of Orthopedics, The Fourth Affiliated Hospital of Hebei Medical University, 12 Health Road, Shijiazhuang, 050011, Hebei, People's Republic of China.
authors.forename: Helin
authors.initials: H
authors.lastname: Feng
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Yingze
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D005270:Femur Head / Q000601:surgery*; D006620:Hip Fractures / Q000601:surgery*; D006801:Humans; D057072:Intra-Articular Fractures / Q000601:surgery*; D019637:Orthopedic Procedures / Q000295:instrumentation*