Outcomes of Mini-Open Sinus Tarsi Approach in Management of Displaced Intra-articular Calcaneal Fractures Sanders Type II and III

Background: The calcaneal displaced intra-articular fractures represent challenging that are often complicated by significant risks of soft-tissue compromise as well as wound-related complications. Recently, the mini-open sinus tarsi approach aims to minimize surgical trauma and decrease wound healing complications, while still providing reliable stabilization of the fracture. This work aimed to assess the clinical as well as the radiological outcomes of mini-open sinus tarsi approach in managing Sanders type II as well as type III displaced intra-articular calcaneal fractures. Methods: Eighteen cases (mean age 36 years) with DIACF were managed by mini-open sinus tarsi approach. Patient outcomes were performed utilizing the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scoring system. We assessed radiological outcomes by comparing pre- and post-operative Bohler’s and Gissane’s angles. Patients were followed for a mean of 8 months. Results: Satisfactory functional outcomes (excellent or good AOFAS scores) were found in 88.8% of patients, with the mean AOFAS score significantly improving post-operatively to 86.4 ± 9.7. Radiological assessment showed significant correction of mean Bohler’s angle (from 12.3° to 31.6°, p < 0.001) and Gissane’s angle (from 97.8° to 124.5°, p < 0.001). Conclusion: Mini-open sinus tarsi approach in managing displaced intra-articular calcaneal fractures demonstrated marked enhancement in anatomical alignment, particularly in Bohler’s and Gissane’s angles, and yielded high rates of satisfactory functional outcomes with a low incidence of wound-related complications.