Patent ID: 8852197

Claim:
An orthopaedic surgical instrument assembly, comprising: a handle including an elongated body and a lever pivotally coupled to the body at a joint, the lever including (i) a first flange positioned below the joint, the first flange extending in a first direction, and (ii) a second flange positioned above the joint such that the joint is positioned between the first flange and the second flange, the second flange extending in a second direction opposite the first direction, a keel punch configured to be inserted into a proximal end of a surgically-prepared tibia of a patient, the keel punch including a lip configured to be engaged by the first flange of the lever, and a guide tower including (i) a tower base having an inner surface that defines a passageway sized to receive the keel punch and the body of the handle, and (ii) an inner wall defining a rectangular aperture in the tower base, the inner wall being configured to be engaged by the second flange of the lever.