Patent ID: 8641741

Claim:
An aiming block fixation system for fixing an aiming block to a bone plate comprising: a bone plate having an outer surface, a bone-contacting surface for application to a bone, first and second bone plate holes extending from the outer surface to the bone-contacting surface, and a camming surface surrounding the first bone plate hole at the bone-contacting surface, the first bone plate hole extending along a first axis; an aiming block having an upper surface, a lower surface engageable with the outer surface of the bone plate, a first angled aiming block bore extending from the upper surface to the lower surface along a second axis which is at a non-zero degree angle to the first axis of the first bone plate hole, the aiming block having an additional bore extending from the upper surface to the lower surface axially aligned with the second bone plate hole for guiding a surgical tool or bone screw therethrough; and a locking element extending through the first angled aiming block bore and the first bone plate hole such that a central longitudinal axis of the locking element is oriented at a non-zero degree angle to the first axis, with the locking element including a head having a bottom surface for bearing against the upper surface of the aiming block and a radially outwardly extending camming arm selectively engageable with the camming surface of the first bone plate hole such that the camming arm is disengaged when the locking element is in a first rotational position and engaged when in a second rotational position.