the bone graft preferably about 5 to 15 minutes the bone graft s are then removed from their respective centrifuge containers and packaged for distribution a cleaning and processing graft material is selected and all of the soft tissue and periosteum is removed from the distal femur proximal and distal tibia and cartilage is removed from the site the femur is transected 10 15 cm above the femoral condyles and the distal femoral condyles are bisected transect the proximal tibia 10 15 cm below the tibial plateau the distal femur or proximal tibia is placed in a pan a vise u2122 this is accomplished by removing a section of the diaphysis allowing the vise jaws to grip the tissue securely the cloward set 12 14 16 18 or 20 mm is then assembled 1 place the extractor assembly within the cutter shaft 2 screw the cutter assembly onto the shaft with the aid of the cloward set wrench 3 screw the set point onto the extractor assembly 4 insert the shaft of the cloward set into the u215c u2033 variable speed drill and tighten the chuck with the key the set point is then placed and locked at the forward aspect of the cutter the apparatus is then placed on the tissue to be fashioned drilling is commenced at a moderate speed after the set point has made a deep cut in the tissue and the teeth have begun to cut into the tissue drilling is stopped and the set point apparatus is unlocked drilling is continued using the.