Tarsal tunnel syndrome is not common. And if diagnosed accurately, it depends on what the cause is.
There are plenty of causes, including bone spurs, tumours/growths, cysts, inflammation of tendons/tendon sheaths, rheumatoid arthritis, diabetes, and even broken or sprained ankles.
The tibial nerve running in the tarsal tunnel gets compressed/ trapped, and results in paresthesia/pain, burning sensation over the heel and plantar surfaces of the big toe/2/3 toes as well. It can be irritating, even debilitating.
So if a tarsal tunnel syndrome is confirmed, the cause should be identified and managed appropriately.