The purpose of this article is to report midterm follow-up of operatively treated calcaneus fractures. All patients with a calcaneus fracture, treated with open reduction and internal fixation (ORIF) using the extensile lateral approach, were identified. Functional outcomes were assessed using the American Orthopaedic Foot and Ankle Society's (AOFAS) ankle-hindfoot assessment, SF-36, and a questionnaire. There were 20 patients (25 fractures): 16 males and four females. The average age was 42 years (range, 16-73 years) and the mean follow-up time was 40 months (range, 13-73 months). The mean AOFAS score was 67.8 (SD = 19.3) and the mean SF-36 score was 55.7 (SD = 26.3). Patients in an motor vehicle accident had more associated injuries. Statistically significantly worse AOFAS scores were noted in patients with ORIF21 days after their injury (