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dynamic hip screw
Dynamic hip screw (DHS) or Sliding Screw Fixation is a type of orthopaedic implant designed for fixation of certain types of hip fractures which allows controlled dynamic sliding of the femoral head component along the construct. One common use is internal fixation of intertrochanteric fractures of the femur, which are common in older osteoporotic patients. There are 3 components of a dynamic hip screw, including a lag screw (inserted into the neck of the femur), a sideplate and four cortical screws (fixated into the proximal femoral shaft) The idea behind the dynamic compression is that the femoral head component is allowed to move along one plane; since bone responds to dynamic stresses, the native femur may undergo remodeling and proper fracture healing.
==References==
* http://www.gla.ac.uk/t4/~fbls/files/fab/tutorial/clinical/orhip.html
* http://www.wheelessonline.com/ortho/sliding_screw_fixation_in_subtroch_frx
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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