Femoroacetabular impingement - mixed type

Case contributed by Dr Ahmed Abd Rabou

Presentation

Bilateral hip pain and limitation of movement more on the right side

Patient Data

Age: 55 years old
Gender: Male

There is subchondral degenerative changes and marrow edema of the lateral acetabular margin on the right side with associated acetabular excessive coverage of femoral head, superior labral tear and an osseous bump seen lateral to the physeal scar. All suggests femoroacetabular impingement of mixed type. Also there is mild right hip joint effusion and bilateral hip osteoarthritic changes.

Annotated image

The white arrow points to the osseous bump lateral to the physeal scar. The white circle refers to the superior labral tear.

Case Discussion

Femoroacetabular impingement occurs when there is repititive microtrauma from impingement of femoral head against the acetabulum. It is classified to pincer type due to excessive acetabular coverage of femoral head, cam type from dysplasia of the femoral neck and mixed type combines both features.

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Case information

rID: 26117
Case created: 29th Nov 2013
Last edited: 11th Dec 2015
Inclusion in quiz mode: Included

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