Peroneal tendon injuries.

Injuries to the peroneal tendons are common. Acute injuries of the peroneus brevis tendon include tendinitis; avulsion of the insertion with or without bone fragment, i.e., styloid fracture of the fifth metatarsal; lacerations; and acute dislocation with or without a "rim fracture." Chronic lesions include longitudinal rents in the tendon either alone or associated with other localized disease. Lesions of the peroneus longus tendon include rupture and longitudinally oriented chronic tears, perhaps with a fragmented os perineum. Treatment for these entities is discussed.