ABSTRACT
The neuropathic compression of the tibial nerve and/or its branches on the medial side of the ankle is called tarsal tunnel syndrome (TTS). Patients with TTS presents pain, paresthesia, hypoesthesia, hyperesthesia, muscle cramps or numbness which affects the sole of the foot, the heel, or both. The clinical diagnosis is challenging because of the fairly non-specific and several symptomatology. We demonstrate a case of TTS caused by medial dislocation of the talar bone on the calcaneus bone impacting the tibial nerve diagnosed only by ultrasound with the patient in the standing position.
Subject(s)
Talus , Tarsal Tunnel Syndrome , Ultrasonography , Humans , Joint Dislocations/diagnostic imaging , Joint Dislocations/diagnosis , Joint Dislocations/etiology , Talus/diagnostic imaging , Talus/abnormalities , Tarsal Tunnel Syndrome/etiology , Tarsal Tunnel Syndrome/diagnosis , Tarsal Tunnel Syndrome/diagnostic imaging , Ultrasonography/methods , Weight-BearingABSTRACT
Tarsal tunnel syndrome is a neuropathic compression of the tibial nerve and its branches on the medial side of the ankle. It is a challenging diagnosis that constitutes symptoms arising from damage to the posterior tibial nerve or its branches as they proceed through the tarsal tunnel below the flexor retinaculum in the medial ankle, easily forgotten and underdiagnosed. Neural compression by vascular structures has been suggested as a possible etiology in some clinical conditions. Tibial artery tortuosity is not that rare, but only that it affects the nerve can cause tarsal tunnel syndrome. Therefore, a study care must be taken to avoid false-positive errors.
