CAM morphology femoroacetabular impingement

CAM morphology femoroacetabular impingement

Population: Tends to occur in young males

CT

Loss of sphericity of the femoral head

A bump at the femoral head-neck junction - Seen in 50%

Osteoarthritic change

Alpha angle > 55 degrees in anterosuperior position

Femoral head-neck offset < 6-7 mm

MRI

Focal cartilage delamination - Carpet phenomenon

Chondrolabral separation

Large cartilage defects

Labral avulsion

References

1. Schubert R, Vadera S, Silverstone L, et al. Femoroacetabular impingement syndrome. Reference article, Radiopaedia.org (Accessed on 13 Jul 2024) https://doi.org/10.53347/rID-13803

2. Dahnert, Wolfgang F. Radiology Review Manual. Available from: Wolters Kluwer, (8th Edition). Wolters Kluwer Health, 2017. p96