Disclosed is a passive gravity assist flexion device, principally for knee joint flexibility having such arrangement to provide appropriate content stable elevated support of the posterior intersection, concerning the femur and tibia of an impaired knee joint whereby promoting gravity assist passive flexion towards gradual comfortable knee joint muscle stretching. The disclosed device arrangement comprised of a padded single knee posterior horizontal support bar, capable of desired lateral rotational movement, while firmly affixed mid-span atop a vertical linear traveling height adjustment threaded rod. Whereby adjustment rod thread engagement means establishes and maintains desired knee posterior horizontal support bar height position. Furthermore, the disclosed device utilizes a center base foundation arrangement providing a resolute vertical stable support device.
