A cutting tool is provided with an arcuate cutting blade that preferably engages a guide tool to create a curved resected surface during an arthroplasty procedure. In one embodiment, a depth of the cutting blade is sufficient to permit the simultaneous creation of resected surfaces on two bones that articulate, such as both the femur and the tibia for a given condyle, without the need to reposition the guide or the leg. In another embodiment, a cutting member has a generally rectangular cross-section along a longitudinal axis with a first and second surface having cutting teeth defined thereon and a third and fourth surface adapted to interface with a cutting guide positioned proximate the bone. In this embodiment, the cutting tool can resect the bone in two different directions without reorienting the cutting member.
