What causes pistol grip deformity?

What causes pistol grip deformity?

Pincer impingement is characterized by local or general overcoverage of the femoral head by the acetabular rim. Both forms might cause early osteoarthritis of the hip. A decreased head/neck offset has been recognized on AP pelvic views and labeled as “pistol grip deformity”.

What is pistol grip hip?

The pistol grip deformity is considered a typical radiographic sign of cam-type femoroacetabular impingement. The shape of the proximal femur is reminiscent of a flintlock pistol known from old pirate movies.

What is femoral head neck offset?

The head-neck offset is measured as the distance between a line parallel to the femoral neck axis at the cortex of the femoral neck and a parallel tangent to the femoral head (distance a in Fig. 2b).

What is cam deformity?

Cam deformities describe an abnormal anterosuperior femoral head–neck junction, whereas pincer deformities describe abnormalities in the shape or orientation of the acetabulum (Figure 1). Some patients have both deformities, designated mixed pathology.

Is Fai inherited?

Causes and Risk Factors The condition appears to be caused by a combination of genetic and environmental factors. Some researchers believe that the risk of FAI is increased by significant athletic activity before a child’s bones are mature and that contact sports may make hip impingement worse.

What causes cam deformity?

Cam deformities are due to loss of the sphericity (round shape) of this femoral head. As a result, the labrum can become “pinched” between the bone of the socket and the bone of the ball and is referred to as femoroacetabular impingement or FAI.

How painful is hip impingement?

It causes symptoms such as pain and stiffness in the groin and thigh region. Patients with hip impingement syndrome feel pain when bending or sitting for long periods, however not all who have it experience symptoms.

Why does my femur look like a pistol grip?

The head and neck of the femur takes on the shape of a pistol grip when viewed on X-ray. It’s an early sign of osteoarthritis (OA). The edge of the acetabulum (hip socket) is prominent. The head of the femur butts up against the edge of the acetabulum instead of sliding and gliding down smoothly in the socket.

What is pistol grip deformity of the hip?

Pistol grip deformity describes the abnormal shape of the hip joint. It was first described by Dr. S. D. Stulberg and associates back in 1975. The head and neck of the femur takes on the shape of a pistol grip when viewed on X-ray. It’s an early sign of osteoarthritis (OA).

What are the different types of Ferris Smith grips?

Available in three jaw sizes: short jaw for holding bone, medium jaw for smaller bones, and long jaw for tissue. Small Grip Handle version is designed with the grip closer together for easier gripping and to help reduce hand fatigue. Angled to simulate the pinch forceps position. Ferris-Smith tips effectively hold soft tissues or needles.

What is femoral acetabular impingement (FAI)?

An alternate type of femoral acetabular impingement causes abnormal jamming of the head-neck junction. Normally, the femoral head moves smoothly inside the hip socket. The socket is just the right size to hold the head in place. If the acetabulum is too shallow or too small, the hip can dislocate. In the case of FAI, the socket may be too deep.