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Posterior Tibial Tendon Dislocation: A Case Report

Published:September 21, 2021DOI:https://doi.org/10.1053/j.jfas.2021.09.009

      Abstract

      Isolated posterior tibial tendon dislocation is a rare condition. Diagnosis can be challenging, especially in the acute clinical setting. Predisposing factors include shallow posterior tibial tendon groove and tear of the flexor retinaculum. We report the case of traumatic subluxation of the posterior tibial tendon, illustrating imaging findings and surgical technique. Posterior tibial tendon dislocation was detected using dynamic ultrasound, while magnetic resonance was essential for a comprehensive evaluation that included underlying predisposing anatomic abnormalities and associated pathologic conditions. Conservative treatment is often unsuccessful thus surgical approach was needed. Under ampliscopic guidance, a bone tunnel was created behind the retromalleolar groove. The posterior tibial tendon was located into the new groove and the retinaculum was re-attached and tightened by anchors and absorbable sutures at the anterior margin of the sulcus. At 12-month follow-up, the patient did not complain any residual pain and he was able to perform normal daily activities without any limitations and with no further tendon dislocations.

      Level of Clinical Evidence

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