Abstract: The upper extremity exercise apparatus is a device intended to be used by humans to exercise their upper extremity. The apparatus exercises the upper limb in multiple planes in gravity assisted, gravity eliminated, and against gravity positions. It can be used in a standing, sitting, or lying position. The exercise apparatus consists of a long tubular structure generally made from plastic. A short movable sleeve, generally made from plastic, surrounds the long tubular structure. The movable sleeve has a slightly bigger inner diameter than the tubular structure's outer diameter. The difference in size allows the movable sleeve to migrate freely along the length of the apparatus. To operate the apparatus, the user positions his or her hand onto the movable sleeve. One hand stabilizes the apparatus while the other hand smoothly moves the sleeve in multiple planes.