Tibial Plateau Leveling Osteotomy, or TPLO, is a procedure which puts the animal's knee joint back in proper alignment. During the surgery, the leg bones are cut and rotated to their proper positions and then stabilized using a metal plate and bone screws. As with any kind of complicated orthopedic surgery, the recovery period is crucial and the animal's activity must be severely limited. Patients must not be allowed to jump, play, run, climb up and down stairs, or do much more than walk quietly on a leash.