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Background: Open reduction and internal fixation (ORIF) of calcaneal fractures using an extended lateral approach results in soft tissue disruption and theoretically subtalar joint stiff-ness. A minimally invasive sinus tarsi approach for posterior facet exposure and percutaneous screw fixation of the calcaneal body has been implemented. This report details the reduc-tion and stability of the internal fixation resulting from this approach. Methods: Twenty-one consecutive patients (18 male, 3 female, 45 ± 16 years) with 22 calcaneal fractures under-went ORIF with minimal exposure through the sinus tarsi for reduction, lateral plate fixation, and percutaneous screw fixation. There were nine Sanders type II fractures and 13 type III fractures. Sixteen fractures had calcaneocuboid joint involvement. Nineteen patients (19 fractures) were available for follow-up (mean, 32 ± 14 months). Two computed tomography scans were obtained on each patient, one immediately post-operatively and one after a minimum of 1 year, to evaluate reduction and fixation stability, respectively. The posterior face