Paragraph Number

4

Implementations may include one or more of the following features. The patient specific instrument where when the bone engagement surface seats over the joint: the first guide feature is configured to define a first cut surface formed by resection of the first bone; the second guide feature is configured to define a second cut surface formed by resection of the second bone; where the second cut surface extends inferiorly away from the first cut surface at a first angle measured from the first cut surface and extends posteriorly away from the first cut surface at a second angle measured relative to the first cut surface; and where the first cut surface is perpendicular to a longitudinal axis of the first bone. One of the first guide feature and the second guide feature may include a position and an orientation, at least one of which is based on patient imaging data. In one implementation, the patient imaging data is used to define a distance between at least one of a first top edge of the first guide feature and the first surface and a second top edge of the second guide feature and the second surface.

Added by DJM 2 2022