US Patent 8038681 Modular femoral orthopaedic surgical instrument

A femoral orthopaedic surgical instrument includes a posterior femoral trial having a cutting guide defined therein and an anterior femoral trial removably coupled to the posterior femoral trial. The anterior femoral trial may also include a cutting guide defined therein. The femoral orthopaedic surgical instrument may also include a base block couplable to the posterior femoral trial in place of the anterior femoral trial. A plurality of additional orthopaedic instruments may be coupled to the base block.