Abstract: The invention relates to an orthosis (100) and method for the treatment of wrist and elbow illnesses. The orthosis (100) includes a first cuff (101) adapted to be secured to a hand of a user. A second cuff (102) is adapted to be secured to an upper arm portion above an elbow joint of the user. The first cuff (101) and the second cuff (102) include a first attachment point (103) and a second attachment point (104), respectively. The orthosis (100) also includes a resilient member (105) having a first end (106) and a second end (107) opposing the first end (106). The first end (106) of the resilient member (105) is attached to the first attachment point (104) of the first cuff (101). The second end (107) of the resilient member (105) is attached to the second attachment point (104) of the second cuff (102).