Traumatic pathologies of the calcaneal peroneal tubercle.

The peroneal tubercle occurs in about one half of human feet. It size varies from a small nodule of less than 1mm height to a prominent spur up to 1cm in size. It had been noted to cause stenosing tenosynovitis of the peroneal tendons, especially in association with an accessory peroneal bone. The current manuscript describes two cases of symptomatic tenosynovitis developing after an ankle sprain with fracture of the peroneal tubercle. The tenosynovitis caused dysfunction of the peroneal tendons unresponsive to prolonged conservative therapy. Symptoms were resolved following surgical resection.