Dynamic hip screw
Dynamic Hip Screw
The Dynamic Hip Screw (DHS), also known as the Sliding Hip Screw, is a common type of orthopedic implant designed for the fixation of certain types of hip fractures. Pronounced as /dʌɪˈnæmɪk hɪp skruː/, the term originates from the English words "dynamic" (meaning force producing motion), "hip" (referring to the hip joint), and "screw" (a type of fastener).
Overview
The Dynamic Hip Screw is used primarily to treat fractures of the proximal femur, which includes the femoral head, neck, and the trochanteric region. The design of the DHS allows for controlled, dynamic compression across the fracture site, which can promote healing.
Components
The Dynamic Hip Screw system typically consists of three main components: a lag screw, a side plate, and cortical screws. The lag screw is inserted into the femoral head and neck, the side plate is attached to the femoral shaft, and the cortical screws secure the side plate to the femur.
Procedure
During a Dynamic Hip Screw procedure, the surgeon first makes an incision over the hip and thigh. The lag screw is then inserted into the femoral head and neck. The side plate is attached to the femoral shaft, and the cortical screws are used to secure the side plate to the femur. The lag screw is able to slide in the barrel of the side plate, allowing for some controlled movement as the fracture heals.
Related Terms
- Orthopedic surgery: The branch of surgery concerned with conditions involving the musculoskeletal system.
- Hip fracture: A break that occurs near the hip in the upper part of the femur.
- Proximal femur: The upper part of the thigh bone which includes the femoral head, neck, and the trochanteric region.
- Lag screw: A large screw that is used to compress a fracture or a joint.
- Side plate: A metal plate that is attached to the bone to stabilize a fracture.
- Cortical screws: Screws used to secure a plate to a bone.
External links
- Medical encyclopedia article on Dynamic hip screw
- Wikipedia's article - Dynamic hip screw
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