US Patent 9968820 Rotational exercise device

A rotational exercise device is disclosed. The rotational exercise device includes an upper platform rotatably coupled to a base. The base is configured to rest on the floor. Elastic members located in the base interact with posts located in the upper platform to provide rotatable resistance between the upper platform and base. The elastic members may be exchanged to provide a desired resistance. The rotatable resistance permits the user to perform controlled exercise movements to assist in the physical therapy of rotational joints.