Cam and Pincer Femoroacetabular Impingement: Characteristic MR Arthrographic Findings in 50 Patients

Characteristic MR arthrographic findings of cam FAI include large alpha angles and cartilage lesions at the anterosuperior position and osseous bump formation at the femoral neck; characteristic findings of pincer FAI include a deep acetabulum and posteroinferior cartilage lesions.