Tarsal tunnel syndrome is a compression neuropathy of the posterior tibial nerve at the ankle. It is also called posterior tibial nerve neuralgia.

Tarsal tunnel syndrome is a rarely reported entrapment neuropathy of the deep peroneal nerve under the extensor retinaculum at the ankle. Entrapment neuropathy is a form of compression neuropathy.

The roof of the tunnel is the inferior extensor retinaculum. The floor is the fascia overlying the talus and navicular. Within the tunnel are four tendons,...