System for forming a patient specific surgical guide mount

A resection system for making a resection of a bone, said bone having localized anatomical surface features prior to resection, comprising:

• a resection guide locator including a body having a bone engagement portion with a surface comprising localized features that are topographically complementary to said localized anatomical surface features of said bone,
• the body including opposing medial and lateral wings, the wings extending outwardly from the body,
• the body defining a recess, the recess being a socket defined by an annular wall,
• the annular wall including an upper wall, a lower wall,
• and opposing medial and lateral side walls, the medial and lateral side walls disposed between the upper and lower walls, the medial side wall disposed in the medial wing, the lateral side wall disposed in the lateral wing, the upper wall offset from the medial and lateral side walls such that a length of the upper wall is less than a distance between the medial and lateral side walls, and an elongate slot within the recess,
• a resection guide having a body defining a resection slot, at least a portion of the resection guide body sized and configured to be received within the recess defined by the resection guide locator,
• wherein the resection guide locator and the resection guide are formed from different materials, and wherein the resection slot defined by the resection guide aligns with the elongate slot defined by the resection guide locator when the resection guide is received within the recess defined by the resection guide locator, the resection slot positioned for making said resection of said bone when the resection guide is received within the recess of the resection guide locator.