Images in emergency medicine

Dislocation of the proximal left tibiofibular joint.

Anteroposterior radiograph of the knee. The fibular head is noted to be laterally displaced.

The lateral radiograph does not readily demonstrate the abnormality.

Axial computed tomographic scan of both knees demonstrates the left fibular head (large arrow) to be anterolaterally dislocated from its articulation with the left tibia (small arrow). Used with permission of Daniel M. Fatovich, MBBS, FACEM, University of Western Australia, and Department of Emergency Medicine, Royal Perth Hospital, Perth, Western Australia, Australia.