IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Femoroacetabular impingement - cam lesion

Case contributed by Bruno Di Muzio
Diagnosis certain

Presentation

Martial arts fighter with hip pain.

Patient Data

Age: 30 years
Gender: Male

CT Pelvic bones

ct

There is a decreased offset of the femoral head-neck junction, which is the difference between the widest diameter of the femoral head and the most prominent part of the femoral neck, that appear as a lack of the normal wasting of the femoral head-neck junction. There is also a prominent lateral extension of the femoral head at the expected step-off to the adjacent femoral neck (femoral “bump”). 

Case Discussion

Femoro-acetabular impingement is an impingement syndrome of painfully limited hip motion as a result of certain types of underlying morphological abnormalities in the femoral head-neck region and/or surrounding acetabulum. In this case, the osseous bump or cam morphology is causing the impingement. 

This can lead to early hip osteoarthritis.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.