Shoulder Stabilizer SPADonJoy Shoulder Stabilizer SPA High Performance Support for Contact Sports. Designed to help protect and stabilize the shoulder post injury and post operatively. The DonJoy Shoulder Stabilizer SPA is specifically engineered for athletes engaged in contact sports, such as football and hockey, where shoulder pads are worn. This advanced orthopedic device is designed to limit shoulder range of motion (ROM) to help prevent or manage shoulder instability,