Surgical correction of hindfoot valgus deformity (clinical case)

Introduction. A study of the results of surgical treatment for post-traumatic hindfoot deformities using talocalcaneal joint fusion has shown that the most common complication is an insufficient or excessive correction of the deformity, which is associated with the size of the graft. The aim of the study is to demonstrate the result of using a new method for surgical correction of post-traumatic valgus hindfoot deformity, using preoperative planning and 3D modeling for bone grafting. Materials and methods. The article discusses a case of successful use of a new surgical method for correcting deformities in a patient with posttraumatic valgus deformation of the hindfoot (patent No 2845525). The method includes preoperative planning which includes creating a bone graft model with the required shape and size, and accurate calculation of the location of landmarks for optimal placement of fixing screws based on functional multispiral computed tomography data. Results and discussion. The patient underwent arthrodesis of the talocalcaneal joint using a prefabricated allograft according to the created model. The allograft was installed in the joint cavity and fixed with screws in a given direction. The use of the proposed method made it possible to completely eliminate valgus deformity of the hindfoot, relieve pain, restore foot function, and prevent the loss of correction and development of deformity relapse. It also reduced the risk of infectious complications. Achieving a good clinical and functional result was made possible by using new approaches and technical solutions at the stages of preoperative planning and surgical correction. Conclusions. B efor e surgery , it is necessary to perform a CT scan of the foot, create a model of the bone graft, and determine where the screws will be placed. This allows us to prepare a bone allograft in advance to correct the hindfoot deformity, which is then firmly secured between the talus and tibia.