Case report 389: Idiopathic anterolateral dislocation of the fibula at the proximal tibiofibular joint

A case of a 4-year-old girl with idiopathic anterolateral dislocation of the head of the fibula is reported. It is stressed that although this condition is considered rare, it is probably not adequately appreciated. This type of dislocation at the proximal tibiofibular joint is the most common form of a group of different types of subluxations/dislocations described in the text. Radiologically, the diagnosis is established by applying pressure on the lateral aspect of the proximal end of the fibula, which in this instance produced pain and anterolateral dislocation of the fibular head. Release of the pressure resulted immediately in return to normal. Early diagnosis and adequate treatment are essential to avoid the crippling effects that could ensue without appropriate therapy. (orig.)