Proximal peroneus longus tear: rare case in a teenage athlete and review of the literature.

We present the case of a 15-year-old teenager who sustained an ankle inversion injury while playing American football, which yielded only minimal pain, but also foot numbness and a lateral leg bulge. Magnetic resonance imaging evaluation revealed a proximal peroneal tear. These rare injuries are often associated with compartment syndrome, a surgical emergency, which was ultimately excluded clinically in this patient. Relevant anatomy, mechanism of injury, and clinical manifestations are discussed.