Tarsal tunnel syndrome occurs when inflammation occurs in the fibrous canal containing the posterior tibial nerve. Often caused by injury, the condition may be referred to as carpal tunnel of the foot. Tarsal tunnel syndrome is painful and can affect the comfort with which one runs or walks.
The posterior tibial nerve, blood vessels, and tendons pass through the enclosed tarsal tunnel along the inside of the foot near the ankle. The nerve lies between the ankle bone on the inside and the flexor retinaculum ligament on the outside. When this nerve is compressed, a person can develop tarsal tunnel syndrome. People with the condition require prompt treatment to avoid long-term, irreversible damage.
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