What is Cam and pincer morphology?

What is Cam and pincer morphology?

Cam hip morphology is characterized by a nonspherical femoral head, while pincer morphology is defined as overcoverage of the acetabulum relative to the femoral head, which can be either global (bony overgrowth of the acetabulum or a deep socket) or focal (acetabular retroversion).

What is center-edge angle?

The center-edge angle was measured as the angle between the vertical axis of the pelvis and a line connecting the femoral head center and the lateral acetabular margin (Fig. ​ 2). 2). The vertical axis of the pelvis was represented by a line connecting the center points of the femoral head of both sides.

What is pincer morphology of hip?

Pincer morphology refers to an abnormality of the acetabulum, in particular, acetabular overcoverage, which can be focal or global and is one cause of femoroacetabular impingement.

What causes pincer impingement?

Pincer impingement occurs when the acetabulum is excessively deep or covers too much of the femoral head. In the case of the latter, it often results from excess bone growth that extends out over the normal rim. The overhang can impinge the neck of the femur and tear labrum.

What is pincer deformity?

Pincer impingement involves excessive coverage of the femoral head by the acetabulum. With hip flexion motion, the neck of the femur bone “bumps” or impinges on the rim of the deep socket. This results in cartilage and labral damage.

What is the center edge angle of the hip?

The angle is measured between a vertical line through the center of the femoral head (line VC) and a second line from the center of the hip to the anterior-most aspect of the acetabulum (line CA). Values from 20-45 degrees are considered to be within the normal range 2.

What is pincer impingement?

How do you fix pincer hip impingement?

In a high percentage of cases, pincer FAI is associated with cam FAI. The aims of surgical treatment of pincer FAI are to eliminate the cause of the contact and repair the joint damage; the surgery may be open or arthroscopic, performed with an articular or extra-articular approach.