The tarsal tunnel is an region on the inside of your ankle that is defined by a small, narrow space. Several important structures through area such as tendons (posterior tibialis, flexor digitorum longus, flexor hallucis longus), arteries, veins, and nerves. A thick ligament is overlying it to protect the underlying structures. When this area becomes compressed, tarsal tunnel syndrome can present significant dysfunction and pain throughout the foot and ankle. You may experience burning, tingling, numbness, electrical shocks, pain and dysfunction. You may notice this is intermittent and gets triggered by certain movements or activities.
https://www.myfootspecialist.com/ankle-surgery/tarsal-tunnel-syndrome/