A hand splint includes: a forearm component; a strut mounted on the forearm component; and a hand component mounted on the strut such that a spacing extends between the hand component and the forearm component, whereby the strut spans a wrist when the hand splint is worn. The hand component is configured to receive the volar surface of digits 2 through 5, the thumb, and the palm. The hand component includes a malleable section and may include a resilient section for generating a continuous restoring force in response to bending. Multiple hand pieces can be used with the same palm support platform and forearm component for progressive treatment of hand. An initial hand piece having a malleable section and a rigid bar-like portion; a second hand piece having only a malleable section; and a hand piece having both a malleable section and resilient section may be progressive used.