Paragraph Number

401

As also shown in Figure 24A, method 2400 may include positioning a resection guide onto the lateral surface of the calcaneus. The resection guide may include: a body having an anterior side, a posterior side, a medial side, a lateral side, a dorsal side, and a plantar side; a posterior resection feature configured to guide a cutting tool to form a first osteotomy in the calcaneus, the posterior resection feature extending through the resection guide from the lateral side to the plantar medial side along a first trajectory determined based on a calcaneus model of the calcaneus based on medical imaging of the patient’s foot, the calcaneus model configured to match the anatomy of the patient's foot; an anterior resection feature configured to guide a cutting tool to form a second osteotomy that connects with the first osteotomy to form a wedge bone fragment from the calcaneus, the anterior resection feature extending through the resection guide from the lateral side to the plantar medial side along a second trajectory determined based on the calcaneus model; a first bone attachment feature configured to engage the wedge bone fragment after formation of the wedge bone fragment; a second bone attachment feature configured to engage the wedge bone fragment after formation of the wedge bone fragment; a plantar landmark registration feature that extends from the plantar side of the body and is configured to contact a plantar surface of the calcaneus; and a bone engagement surface on the medial side of the body, the bone engagement surface configured to match a contour of the calcaneus when the body is positioned on the calcaneus (block 2404). For example, a surgeon may position a resection guide onto the lateral surface, the resection guide, as described herein.

Added by DJM Jan 2024