Dynamic hip screw

Dynamic Hip Screw (DHS) is a type of orthopedic implant designed for the fixation of certain types of hip fractures. The design allows controlled dynamic sliding of the femoral head component along the construct.

Indications

The Dynamic Hip Screw is designed to provide strong and stable internal fixation of a variety of intertrochanteric, subtrochanteric and basilar neck fractures, with minimal soft tissue irritation.

Design

The DHS system consists of a lag screw (or "hip screw"), inserted into the neck and head of the femur, and a side plate, which is fixed to the proximal lateral surface of the femur.

Procedure

The procedure to implant the DHS involves a surgical operation. The patient is placed in a supine position and the hip is exposed through a lateral incision. The lag screw is inserted into the femoral head and the side plate is attached to the lateral surface of the femur. The plate is fixed to the bone with cortical and cancellous bone screws.

Complications

Possible complications of the procedure include non-union, mal-union, infection, implant failure, and avascular necrosis of the femoral head.

See also

• Orthopedic surgery
• Hip fracture
• Bone fracture
• Femur
• Surgical procedures

References

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