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Purpose Evaluation of management of the displaced intraarticular calcaneal fractures (DIACF) Sanders types II and III by using minimally invasive sinus tarsi approach and fixation by screws only technique. Methods Open reduction using the limited lateral approach and internal fixation using screws only was studied in 33 patients with unilateral isolated simple DIACF with a mean age of 35 years (15 type II patients and 18 type III patients). All patients were evaluated both clinically and radiologically. Results With a mean follow-up period of 28.8 months (range 12-53 months), no cases of failure of reduction or displacement of hardware were detected. The mean AOFAS was 91.73 points while the mean MFS was 95.09 points. Twenty-eight patients were able to resume their pre-injury level of work while the remaining five refrained to sedentary jobs. The mean pre-operative Bohlers' angle was 2.8°(range from -38º to 24º) while postoperatively it was 19.4°(range 5º to 49º). There was no statistically significant difference when comparing the results (AOFAS p-value 1.00, MFS p-value 0.81) between Sanders' type II and III fractures.One patient had postoperative superficial wound infection. Seven patients complained of prominent screw heads. Complex regional pain syndrome occurred in seven patients and was treated successfully at six months duration.Conclusion The limited open sinus tarsi approach can be used successfully to treat displaced Sanders type II and III fractures. It allows for adequate visualization and reduction. Fixation by screws only is also sufficient. It also clearly avoids the major wound complication problems.

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➢ Adult-acquired flatfoot deformity is a complex process attributed mainly to posterior tibial tendon insufficiency.➢ Thorough physical examination and radiographs of the foot and ankle are usually adequate to achieve diagnosis.➢ Nonoperative management is the first line of treatment and has a reported success rate ranging from 67% to 90%.➢ A multitude of surgical options are available, particularly for stage II, with no consensus on the best options.➢ Fusions are associated with poor outcomes; hence, there is a trend toward earlier reconstruction before arthritis ensues.

Level III, observational study.

Level IV.

Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.

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