The story
Dynasplint was founded in 1981 by physical therapist, George R. Hepburn, PT and is the pioneer and recognized market leader in dynamic splinting. The need was recognized for longer periods of stretching to keep range of motion (ROM) gains made in therapy and to make further gains to resolve joint stiffness. In 1981, the Dynasplint was conceived to continue the work of the physical therapist at home.
This spring-loaded dynamic splint is worn at rest for six to eight hours at a time, and employs adjustable low load prolonged duration stretch technology (LLPS) to achieve a permanent change in shortened connective tissues. Conversely, when a joint is stretched quickly by high intensity short duration (HISD) some range of motion may be gained but rebounding will occur.
From Wikipedia’s article on Dynasplint Systems, shared under CC BY-SA 4.0.4