An orthopedic device configured to provide support and/or resistance to a joint. The orthopedic device is adjustable and lightweight and configured to permit a substantial full range of motion of the joint. The orthopedic device can comprise a torso portion, an upper arm portion, and a support system, wherein at least the support system is adapted to mimic part of the muscular system structure and function of the muscles that are used during the range of motion of the joint.