An orthopaedic surgical instrument assembly (12) includes a system handle (14) configured to clamp a broach (20) and femoral stem trial assembly. The system handle includes a clamp lever (80) and a release lever (82) both pivotally coupled to the system handle, and a leaf spring (84) connecting the clamp lever and the release lever. When the release lever is moved from an unclamped position to a clamped position, the leaf spring is put in tension, and the clamp lever engages a flange of the broach, securing the broach to the system handle.
