Clinical features:
Anterior inguinal pain, Painful clicking, Transient locking, Giving away
Pain on flexion and internal rotation, Audible click
No history of significant trauma
High association with developmental dysplasia
MR normal labrum:
Uniform low signal on T1, slightly higher on GE
Intermediate signal may be seen at junction of labrum and cartilage
Intermediate intralabral signal on T1 may be seen in aymtomatic labra (58%)
Pathology:
Most common in anterosuperior labrum
Posterosuperior tears are more common in young
Seen as contrast interposed at labral-acetabular junction
Displacement of labrum may be seen
Associated with chondral defects inn 30%
Signs of labral pathology on MR:
Contrast interposed between labrum and acetabulum
Blunting of inner margin
Deformation
Distortion
Detatchment
Displacement
Perilabral cysts
References:
Cheryl A. Petersilge. Chronic Adult Hip Pain: MR Arthrography of the Hip. Radiographics. 2000;20:S43-S52
