Patent ID: 8425523

Claim:
A customized patient-specific orthopaedic instrument, comprising: a customized patient-specific femoral cutting block that comprises: a body formed from a polymeric material and having a bone-facing surface, the bone-facing surface having a customized patient-specific negative contour that is shaped to match a corresponding contour of a portion of an anterior side of a patient's femur, a cutting guide coupled to the body, the cutting guide being formed from a metallic material and having a first guide slot defined therein that is positioned to allow a surgeon to perform a distal cut on the patient's femur using the first guide slot, at least one tab extending posteriorly from the body, the at least one tab having a bone-facing surface having a customized patient-specific negative contour that is shaped to match a corresponding contour of a portion of the distal side of the patient's femur, a lip extending superiorly from an end of the at least one tab, the lip having a second guide slot aligned with the first guide slot, the second guide slot including a groove extending laterally across the bone-facing side of the lip, and a bone-facing surface having a customized patient-specific negative contour that is shaped to match a corresponding contour of a portion of the posterior side of the patient's femur, a plurality of anterior guide pin bushings coupled to the body, each of the anterior guide pin bushings being formed from a material different from the body and having a passageway defined therethrough sized to receive a corresponding guide pin, and wherein the groove of the second guide slot and the cutting guide define a transverse plane.