Change in Height Following Tibiotalocalcaneal Arthrodesis: Retrospective Radiographic Analysis

Published:November 20, 2022DOI:


      Tibiotalocalcaneal arthrodesis (TTCA) with an intramedullary rod is a viable treatment option for a myriad of pathologies involving the foot and ankle. While the current literature has focused on fixation techniques, deformity correction, and clinical outcomes, we are unaware of any studies specifically examining change in height following a TTCA. In the present study, we retrospectively analyzed radiographs with novel radiographic techniques to determine the change in height from preoperative to postoperative radiographs following TTCA. Patients were divided into three categories: Charcot, arthritis, and pes planus as the indication for surgical intervention. We found that Charcot and arthritis had an average decrease in height on anterior and posterior measurements of the height from the distal tibia to the calcaneus, while pes planus had an increase in height. The average Charcot change in height was -12.0 ± 24.4mm anteriorly and -7.6 ± 15.5mm posteriorly. The average change in height for the arthritis group was -6.9 ± 6.7mm anteriorly and -3.8 ± 5.8mm posteriorly. The pes planus group was found to have an average increase in height 0.5 ± 8.0mm anteriorly and 2.9 ± 5.8mm posteriorly. Overall, we found a statistically significant difference in height change between the three groups in anterior measurements (p- value= 0.012) and posterior measurement (p-value= 0.006). We recommend surgeons who perform this procedure to be aware of the potential change in height to better tailor surgical and postoperative care.
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