Methods and apparatus for performing knee arthroplasty

An assembly for conducting arthroplasty on a knee joint, the assembly comprising:

• (a) a first instrument configured to be secured with respect to a proximal tibia of the knee joint, the first instrument including a bench having a bench connector that includes a generally planar superior surface, the bench connector being configured to be oriented with the generally planar superior surface at a neutral anterior/posterior slope relative to the proximal tibia and at a neutral varus/valgus angle relative to the proximal tibia when the first instrument is secured with respect to the proximal tibia;
• and
• (b) a second instrument configured to be coupled to the first instrument, the second instrument comprising a receiver structure configured to receive at least a portion of the bench connector of the first instrument, the receiver structure permitting a multidirectional translation of the second instrument relative to the first instrument such that the second instrument is movable in two dimensions along the generally planar superior surface of the bench connector when the bench connector is received in the receiver structure.