US Patent 11446041 Knee chamfer block guide with 3D printed undercut saw slot

A bone saw cutting guide block includes a body and a bone saw guide assembly. The body includes a proximal surface and a distal surface. The bone saw guide assembly includes a first guide slot defined by the body. The first guide slot extends through the proximal surface and the distal surface along an insertion and retraction path. The first guide slot may accommodate lateral movement of a bone saw while guiding the bone saw along the insertion and retraction path. The first guide slot includes a first interior surface and a second interior surface. The first interior surface is spaced a first distance transversely away from the insertion and retraction path. The second interior surface is spaced a second distance transversely away from the insertion and retraction path. The first distance is smaller than the second distance.