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.[citation needed] It is the most commonly used implant for extracapsular fractures of the hip,[1] 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 several 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 primary healing: cells join along boundaries, resulting in a robust joint requiring no remodeling.
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References
- ^ Sambandam, Senthil Nathan; Chandrasekharan, Jayadev; Mounasamy, Varatharaj; Mauffrey, Cyril (2016-05-01). "Intertrochanteric fractures: a review of fixation methods". European Journal of Orthopaedic Surgery & Traumatology. 26 (4): 339–353. doi:10.1007/s00590-016-1757-z. ISSN 1432-1068. PMID 27028746. S2CID 11320833.
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