Acute traumatic proximal tibiofibular joint dislocation confirmed by computed tomography.

High-quality AP and lateral radiographs of both knees are essential to confirm the diagnosis. Computed tomography may help resolve diagnostic uncertainty and enable earlier closed reduction to be performed. Moreover, CT scans may be more consistently reproducible than the varied quality of emergency radiographs. In this case, the relative severity of the patient's pain and suggestive radiographs led us to obtain CT scans, which confirmed the diagnosis and enabled early successful closed reduction.