[Anterior tibialis tendon transfer for the treatment of dynamic supination in patients with clubfoot. Analysis of clinical outcomes and complications].

Introduction: our aim was to evaluate the clinical outcomes and complications of anterior tibialis tendon transfer (ATTT) in children with dynamic supination after clubfoot treatment.

Material and methods: children with dynamic supination after initial treatment with Ponseti method or surgery who underwent ATTT between 2008 and 2020 were included for evaluation. Demographic data, previous treatment, associated procedures and fixation method were analyzed. Functional results were evaluated with the grading system described by Thompson. Complications and their treatment were analyzed.

Results: a total of 39 patients (57 feet) were analyzed. 70% received previous treatment with Ponseti method, 19.3% underwent surgical posteromedial release, and 10.7% another type of surgical treatment. 88% of cases required associated procedures including Achilles tendon lengthening or tenotomy, plantar fasciotomy, tibial osteotomy, lateral column shortening, posterior release. The predominant type of fixation was the pull-out button method (96.5%). The average follow-up was 31.5 months. According to the Thompson grading system, 52 patients presented good results, two fair and three poor. 98.2% of the feet showed active contraction of the transferred tibialis anterior tendon. There were four complications: plantar irritation, synovial cyst in the dorsum of the foot and deep infection. Two feet required unplanned surgery.

Conclusion: anterior tibialis tendon transfer is an effective technique to correct residual dynamic supination in patients with clubfoot.