The ability to accurately assess and enhance a person's joint position sense is an inexact science at best. A new method of evaluating and improving joint position sense using modern motion tracking technology that incorporates computer visualization graphics was examined in this study. Injured (n= 6) and healthy subjects (n=12) were evaluated for their ability to determine shoulder joint position in two different tasks. The first task was an active reproduction of a passively placed angle. The second task was a visual reproduction of a passively placed angle. In addition, a training protocol was added to the shoulder experiment to determine the effectiveness of proprioceptive training in conjunction with 3D visualization techniques. The primary findings were: (1) a significant difference (p=0.05) in the level of shoulder joint position sense seen in injured subjects as compared to healthy; (2) a significantly less accurate reproduction of the larger angles (e.g., 80 degrees) in comparison to the smaller angles (e.g., 40 degrees) in the active reproduction task; (3) a significantly greater ability to accurately reproduce angles actively versus visually; and (4) proprioception training using 3D visualization techniques significantly increased both active and visual reproductions of a passively placed angle.