Tarsal tunnel syndrome (TTS), also known as posterior tibial neuralgia, is a painful foot condition in which the tibial nerve is impinged and compressed.
Patients complain typically of numbness in the foot, radiating to the toes, pain, burning, electrical sensations, and tingling over the base of the foot and the heel. Some of the symptoms are:
It is important to attempt to determine the source of the problem for effective treatment. Anything that creates pressure in the tarsal tunnel can cause TTS. This would include benign tumors or cysts, bone spurs, inflammation of the tendon sheath, nerve ganglions, or swelling from a broken or sprained ankle. Varicose veins (that may or may not be visible) can also cause compression of the nerve.
TTS is more common in athletes, active people, or individuals who stand a lot.
Read more about this at the source here – http://en.wikipedia.org/wiki/Tarsal_tunnel_syndrome