LAUSR

BACKGROUND Arthroscopic tibiotalocalcaneal arthrodesis with a retrograde nail is performed as a minimally invasive technique in patients without improvement in conservative treatment of osteoarthritis. Complications and hospital stay after surgery are less using this technique when they are compared with open ones. MATERIALS AND METHODS We review retrospectively from 2016 to 2019 seven patients subjected to a posterior arthroscopic tibiotalocalcaneal arthrodesis with a retrograde intramedullary nail. AOFAS scale was used to assess functional results and we collected other data as complications, time required for bony union, time of nonweight-bearing and scale of satisfaction. We also made a description of the technique we performed. RESULTS The mean hospital stay was 3.43±0.53 days, patients have well functional results and complications were very low. It was noticed tibiotalar bony union in about 86% of patients 10 weeks after surgery and subtalar bony union in about 71% 20 weeks after surgery. Nonweight-bearing was made using a cast for 4 weeks and later, it was changed for Walker allowing patients partial weight-bearing until 10 weeks after surgery. One patient had wound complications and he needed later surgery and another presented tibiotalar pseudoarthrosis, although without symptoms. CONCLUSION Posterior arthroscopic tibiotalocalcaneal arthrodesis offers very good results with a high rate of bony union, few complications, and minimal nonweight-bearing time. This technique could be used in patients without major deformities, especially in those at high risk of complications from the surgical wound.