Patent ID: 8740910

Claim:
A system for sizing a distal portion of a femur during knee arthroplasty, comprising: a body that can be removably attached to the distal portion of the femur, the body includes a top portion, a bottom portion, lateral sides, each lateral side has a catch, and a central longitudinal axis extending through the top portion and bottom portion; and at least two modules, each module having a latch to engage one of the catches so that each module is removably attachable to the body such that the body with an attached module is operable for use in measuring a size of the distal portion of the femur, the at least two modules including at least one module specific to right-knee arthroplasty and at least one module specific to left-knee arthroplasty, wherein each module is configured to support a stylus that is removably attachable to the module, each module supporting the stylus by way of a through-hole that is formed in the module, the through-hole being formed such that when the latch of the module is engaged with one of the catches of the body a central longitudinal axis of the through-hole is not perpendicular to the central longitudinal axis of the body, and when the latch of the module is engaged with one of the catches of the body and the body is attached to the distal portion of the femur the central longitudinal axis of the through-hole is substantially perpendicular to an anterior resection plane of the femur.