The invention relates to an orthosis and method for the treatment of wrist and elbow illnesses. The orthosis includes a first cuff adapted to be secured to a hand of a user. A second cuff is adapted to be secured to an upper arm portion above an elbow joint of the user. The first cuff and the second cuff include a first attachment point and a second attachment point, respectively. The orthosis includes a resilient member having a first end and a second end opposing the first end. The first end of the resilient member is attached to the first attachment point of the first cuff. The second end of the resilient member is attached to the second attachment point of the second cuff. The first attachment point and the second attachment point are positioned such that an extension force and forearm extension force are opposed by a counteracting force.
