Patent ID: 8545508

Claim:
A cutting block for use in a bone osteotomy procedure on a proximal portion of a tibia, the tibia having a longitudinal axis, and the tibia having a first side on one side of a patella tendon and a second side on another side of the patella tendon, the cutting block comprising: a. a body having a receiving portion and a first cutting guide surface formed therein, said first cutting guide surface being open to a first side of said cutting block; b. a first interchangeable portion having a second cutting guide surface formed therein, said second cutting guide surface being open to a second side of said cutting block; c. a second interchangeable portion having a third cutting guide surface formed therein, said third cutting guide surface being open to the second side of the cutting block; and d. a cutout portion defining a recess adapted to receive the patella tendon; wherein the cutting block is adapted to be temporarily affixed to the tibia, such that, when the patella tendon is received by said recess of said cutout portion, said first cutting guide surface is disposed on the first side of the tibia defining a first plane with respect to the tibia, the second cutting guide surface is disposed on the second side of the tibia defining a second plane with respect to the tibia, and the third cutting guide surface is disposed on the second side of the tibia defining a third plane with respect to the tibia, the second and third planes intersecting at an angle within the bone to form an apex; and wherein said first and second interchangeable portions are adapted to be selectively inserted within said receiving portion of said body.