In the past, the surgical management of displaced intraarticular calcaneal fractures has been a contentious issue. Soft tissue problems and concurrent disease must be taken into account in individuals with this syndrome. Stability, anatomic reduction of the fracture, and preservation of soft tissue may all be achieved with the minimally invasive sinus tarsi technique. The purpose of this thesis was to evaluate the result of fixation of displaced intra-articular calcaneus fractures using sinus tarsi approach. Methods: This prospective clinical study included twenty adult patients suffering from recent displaced intra-articular calcaneal fractures from September 2020 and august 2021 that were treated by open reduction and internal fixation through minimal invasive sinus tarsai approach in Orthopedic department of Benha faculty of medicine and Meniet-Elnasr general hospital. After 6 months follow up, mean of AOFAS score was 90.25 ranged from 74 to 99. Mean of Bohler angle was 27.25° and mean of Gissane angle was 122.65°. Regarding patient's outcome according to AOFAS scale, 14 (70%) of patients showed excellent results while 4 (20%) of patients showed good results and 2 patients (10%) showed fair results. There was a statistically significant correlation between AOFAS score and (postoperative Bohler angle) while no significant correlation was founded between AOFAS score and (Age, Sex, preoperative and postoperative Gissane angle). There was a statistically significant correlation between Sanders type and (Age, preoperative Bohler angle) while no significant correlation was founded between Sanders type and (Sex, preoperative and postoperative Gissane angle). Conclusion: Sinus tarsi approach is a less invasive method for treatment of calcaneal fractures. It permits good visualization of the fracture, and allows anatomic reduction of articular surfaces with a decrease of wound complications and shorter waiting time before surgery. It is a valid option of treatment for displaced intra-articular calcaneal fractures with more advantage to Sanders type II.