Background

Knee dislocation is a relatively rare injury but an important one to recognize because coexistent vascular injury, if missed, often leads to limb loss. In addition, knee dislocation often presents in the context of multisystem trauma or spontaneous relocation, which makes detection more difficult.^{[1, 2, 3, 4, 5, 6, 7, 8]}

Patients with knee dislocation should undergo radiography and MRI, as well as angiography. The American College of Radiology has published the ACR Appropriateness Criteria for knee trauma to rate the appropriateness of imaging and treatment procedures.^[9]