Outcome of Minimally Invasive Osteosynthesis for Displaced Intra-Articular Calcaneal Fractures Using Cannulated Screws: A Prospective Case Series

Abstract This prospective study sought to assess the functional and radiological outcomes of minimally invasive osteosynthesis using cannulated screws and to examine the effect of different parameters on the functional outcome. The Maryland Foot Score (MFS) and the visual analog scale (VAS) of pain were used to assess the functional outcomes and postoperative patient's satisfaction rate. Preoperative and postoperative Bohler's angle, angle of Gissane, calcaneal width, and height, were compared. The study included 46 fractures in 40 patients; 38 (95%) males and 2 (5%) females with a mean age of 34.8 ± 3 years. The mean time lapse to surgery was 3.2 ± 2.1 days. The mean duration of surgery was 39.8 ± 9.3 minutes. The mean follow-up period was 29.2 months. At final follow-up, the mean MFS was 85 ± 6.3. Satisfactory results were achieved in 91.3% of fractures, while unsatisfactory in 8.7%. The mean VAS score of pain decreased from 7.3 ± 05 preoperatively to 1.2 ± 0.7 at the final follow-up, p