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Clinical Visual Atlas
Hip & GroinPathology

Femoroacetabular Impingement Syndrome

3D hip cutaway showing cam-type head-neck morphology and the anterosuperior acetabular-labral contact region.

Pathology · Hip & Groin
Femoroacetabular Impingement Syndrome

3D hip cutaway showing cam-type head-neck morphology and the anterosuperior acetabular-labral contact region.

Detailed view

What to notice

  • Cam and pincer morphologies are imaging features; symptoms and clinical findings determine the syndrome.
  • FAIS is assessed through history, hip motion, provocation, function and imaging when appropriate.
  • Morphology can exist in asymptomatic people, so imaging should not be interpreted in isolation.

The visual should be interpreted with the accompanying clinical context. PNA avoids using a single image or special test as stand-alone proof of a diagnosis.