Figure 2. Four testing conditions of the hand for a subject wearing a commercial wrist guard with no volar splint (WG- condition), a volar splint (WG+ condition) and a volar splint + a 13 mm thick Sorbothane palm protector inside the wrist guard (WGS condition, not shown), and a volar splint splints and an air cell between the volar splint and the hand (WGA condition).