Distal femoral cutting block assembly

A composite femoral cutting block for preparing a patient's distal femur to receive a knee prosthesis comprising:

• a) a first block body having a triangular cross section defined by a flat surface that is adapted to engage the patient's distal femur and a pair of included surfaces that each form an acute angle with the flat surface, wherein the inclined surfaces define anterior and posterior chamfer cutting guide surfaces for making anterior chamfer and posterior chamfer cuts on the patient's distal femur and wherein the surgeon can view substantially the entire surface of each inclined surface;
• b) a second block body having an undersurface with an elongated slot, the first block fitting the slot so that the flat surface of the first block body is generally parallel to the distal surface of the second block body;
• c) the first and second block bodies being separate members that can be removed one at a time from the patient's distal femur;
• d) a connector for holding the first block body in the slot of the second block body to define an assembled position;
• e) the assembly of the first block body and second block body having an attachment for anchoring the assembly of the first block body and the second block body to the patient's distal femur;
• f) the second block body having opposed, cutting guide surfaces that are each angled with respect to the undersurface of the second block;
• and
• g) the second block forming a guard over the first block upon assembly.

A composite femoral cutting block for preparing a patient's distal femur to receive a knee prosthesis comprising:

• a) a first block body having a triangular cross section defined by a flat surface that is adapted to engage the patient's distal femur and a pair of included surfaces that each form an acute angle with the flat surface, wherein the inclined surfaces define anterior and posterior chamfer cutting guide surfaces for making anterior chamfer and posterior chamfer cuts on the patient's distal femur and wherein the surgeon can view substantially the entire surface of each inclined surface;
• b) a second block body having an undersurface with an elongated slot, the first block fitting the slot so that the flat surface of the first block body is generally parallel to the distal surface of the second block body;
• c) the first and second block bodies being separate members that can be removed one at a time from the patient's distal femur;
• d) a connector for holding the first block body in the slot of the second block body to define an assembled position and for disassembling one block from the other, even when the blocks are positioned on the patient's distal femur;
• e) the assembly of the first block body and second block body having an attachment for anchoring the assembly of the first block body and the second block body to the patient's distal femur;
• f) the second block body having opposed, cutting guide surfaces that are each angled with respect to the undersurface of the second block;
• and
• g) the second block forming a guard over the first block upon assembly.