An orthopedic support and exercise device may be used to help patients regain strength and mobility during lower limb rehabilitative exercises. An orthopedic support and exercise device may include a foot support body; a rotation restraint wall extending vertically upward on one side of the foot support; a divider wall extending vertically upward from the support body and extending transversely from an opposing side of the foot support body; an ankle bed rest defined by a space between the rotation restraint wall and the divider wall such that a foot placed on the orthopedic support and exercise device with ankle in the ankle bed rest is prevented from rotational movements during extension and flexion of a leg; and a weighted slider with a smooth bottom surface that is attached at a base of the foot support body.