A surgical instrument for use during a surgical procedure to implant an orthopaedic knee prosthesis includes a surgical reamer comprising an elongated shank having a proximal end configured to fit into the chuck of a rotary power tool. A cutting head is located at an opposite, distal end of the shank, the cutting head comprising a cutting tip with a plurality of helical cutting flutes extending away from the cutting tip in a direction toward the proximal end of the elongated shank. A plurality of depth marks is formed in the helical cutting flutes of the cutting head. Each of the plurality of depth marks is positioned at a location on the cutting head corresponding to a predetermined depth of operation of the surgical reamer.
