Dynamic hip screw (DHS) or Sliding Screw Fixation is a type of

orthopaedic Orthopedic surgery or orthopedics ( alternatively spelt orthopaedics), is the branch of surgery concerned with conditions involving the musculoskeletal system. Orthopedic surgeons use both surgical and nonsurgical means to treat musculoskeletal ...

implant designed for fixation of certain types of

hip fracture A hip fracture is a break that occurs in the upper part of the femur (thigh bone). Symptoms may include pain around the hip, particularly with movement, and shortening of the leg. Usually the person cannot walk. They most often occur as a re ...

s which allows controlled dynamic sliding of the

femoral head The femoral head (femur head or head of the femur) is the highest part of the thigh bone ( femur). It is supported by the femoral neck. Structure The head is globular and forms rather more than a hemisphere, is directed upward, medialward, and a ...

component along the construct. It is the most commonly used implant for

extracapsular fracture An extracapsular fracture is a bone fracture near a joint but still located outside the joint capsule. Examples of extracapsular fractures are intertrochanteric and subtrochanteric hip fractures. See also * Intracapsular fracture An intracapsul ...

s of the hip, which are common in older

osteoporotic Osteoporosis is a systemic skeletal disorder characterized by low bone mass, micro-architectural deterioration of bone tissue leading to bone fragility, and consequent increase in fracture risk. It is the most common reason for a broken bone a ...

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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Orthopedic surgical procedures Orthopedic screws {{orthopedics-stub