Findings, case of 30 y/o man, s/p MVA, knee pain, weak pulse in lower extremity

Imaging Findings

Anteroposterior and lateral views show anterior dislocation of the tibia and the fibula (arrows). No fracture is visible.

An emergency reduction of the dislocated knee was performed. A second radiograph showed normal alignment of the knee without fracture.

A weak arterial pulse remained below the knee. Angiography shows intimal tear of right popliteal artery (arrows). The patient was treated for the intimal tear.

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