In the tarsal tunnel syndrome, the posterior tibial nerve is entrapped beneath the flexor retinaculum and deep fascia along the medial border of the foot. This syndrome is not recognized as readily as its counterpart in the upper extremity, the carpal tunnel syndrome. 2 patients with tibial nerve compression were diagnosed by clinical findings and electromyography and had surgical decompression. Besides the tibial compression symptoms, they all complained the symptoms of peroneal compression before operation, In the first case, all the symptoms of tibial and peroneal neuropathies were subsided after surgical decompression, but more aggravated in the 2 nd case.

This paper will reports the clinical & electromyographic findings, and the surgical results.