Paragraph Number

391

For example, suppose the bone is a calcaneus 224 and the surgical procedure and/or surgeon plans to retain the position of that anterior bone fragment 2116 and to translate and/or rotate the posterior bone fragment 2114 to correct a deformity. For example, a surgeon may perform the osteotomy of the calcaneus 224 to correct a varus deformity of the calcaneus 224. Consequently, the surgeon can plan to perform a superolateral (upward and lateral) translation of the posterior bone fragment 2114. Alternatively, or in addition, the surgeon may plan to rotate the posterior bone fragment 2114 to address a bone condition of the patient. Advantageously, the osteotomy system 2000 enables a surgeon to preplan the procedure and visualize how the procedure can address the condition. Furthermore, a surgeon can define a bone engagement surface 2310 for the positioning guide 2300 that will engage with the surfaces of the posterior bone fragment 2114 and/or the anterior bone fragment 2116 which will confirm intraoperatively that the bone fragments are in the predefined positions relative to each other. Advantageously, the bone engagement surface 2310 is defined, at least in part, based a lateral surface of a calcaneus model of the calcaneus 224. In addition, the bone engagement surface 2310 is defined, at least in part, based on a planned reduced position of the posterior bone fragment 2114 and/or the anterior bone fragment 2116.

Added by DJM Jan 2024