Subluxation of tibialis posterior post-tarsal tunnel release

Tibialis posterior tendon is the first tendon posterior to the medial malleolus. Its importance, not only being the prime stabilizer against valgus of the the hind foot and the fore foot abduction, but, as this tendon lies behind the axis of the ankle, it acts as a flexor to the ankle as well. We found a 39-year-old lady with subluxation of the tibialis posterior tendon, which occurred 1 week after a release of the flexor retinaculum and tarsal tunnel release of her right foot. After the operation, the patient was suffering more than the original complaint of tarsal tunnel syndrome. We operated on her by preparing a new sulcus for the tibialis posterior, which we covered with a graft from the fascia lata of the thigh. The patient was followed up for 6 months.