Tarsal tunnel syndrome (TTS) is a condition that occurs when you have a damaged or compressed tibial nerve. The tibial nerve is a nerve in your ankle. It runs through your tarsal tunnel, a passage in your ankle made up of bones and ligaments. Tarsal tunnel syndrome occurs when something damages your tibial nerve. Causes of tibial nerve damage can include:
- Flat feet.
- High arches
- Injuries, such as an ankle sprain or fracture.
- Irregular growths, such as ganglion cysts, bone spurs or varicose veins.
- Masses such as lipomas or tumors near your tibial nerve.
- Body-wide (systemic) conditions, such as hypothyroidism, diabetes or arthritis.
- For many people who develop tarsal tunnel syndrome, TTS is part of an overuse injury.
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