Talonavicular (TN) arthrodesis is an established procedure for symptomatic TN joint pathology and medial column dysfunction. Open techniques provide direct visualization but may be associated with approach-related soft-tissue morbidity. Minimally invasive surgery (MIS) has been proposed to reduce tissue disruption; however, comparative clinical evidence focusing on functional outcomes remains limited. This study compared functional outcomes between MIS and open TN arthrodesis. This retrospective cohort study included 56 feet (55 patients) treated with TN arthrodesis between January 2021 and January 2025. Thirty-two feet underwent MIS TN arthrodesis and 24 feet an open approach. The primary endpoint was the American Orthopaedic Foot Cohen’s d = 0.15) or operative time (59.2 ± 35.6 vs. 69.6 ± 35.1 min; p = 0.415). No complications were documented in the MIS cohort; one patient in the open cohort developed symptomatic nonunion requiring revision (between-group comparison p = 0.389). In this retrospective comparative cohort, MIS and open TN arthrodesis were associated with substantial and comparable functional improvement at short-to-midterm follow-up. Complications were uncommon overall; the low event rate precludes firm conclusions regarding comparative safety or nonunion risk. MIS may be considered when soft-tissue preservation is prioritized, and future prospective studies with standardized protocols and PROM-based outcomes are needed. III.
Werneburg et al. (Sat,) studied this question.