In order to play, you MUST be able to push your own chair and to be eligible for play in the NWBA, a player must have an irreversible lower extremity disability, such as paralysis, amputation, radiological evidence of limb shortening, partial to full joint alkalosis or joint replacement, which consistently interferes with functional mobility. Findings such as soft tissue contracture, ligamentous instability, edema or disuse atrophy, or symptoms such as pain or numbness, without other objective findings shall not be considered a permanent lower extremity disability. Directly from the NWBA Rules book 2017-2019.