Shoulder joint position sense (JPS) has been shown to be more sensitive in end range of motion movements in uniplanar rotational studies, a phenomenon attributed to capsuloligamentous mechanoreceptor activation. However, this phenomenon has not been examined in active multiplanar movement. PURPOSE: to examine the effects of plane of elevation at 90° elevation on active repositioning error of a presented joint position. METHODS: A total of 9 subjects (6 M, 3 F), with a mean age of 22.3 yrs. (± 1.7 yrs.) participated in the study. Following a standardized warm-up procedure and range of motion (ROM) testing, subjects were fitted with a head-mounted display and asked to remove shirts (females wore sports bras) to minimize visual and tactile cues. Kinematic data were collected via the Polhemus Fastrak magnetic tracking system, with one receiver on the thorax and one on the humerus. Testing involved the presentation of five target positions, consisting of various plane of elevation angles covering 90% of total horizontal abduction ROM from the sagittal plane, all at 90° elevation. These positions were presented via custom-made Labview software through the head-mounted display. Once the target position was achieved, the display turned black and remained so for the remainder of the trial. Subjects held the position for five seconds, and returned to the side. Subjects then attempted to replicate the target position in three dimensions, in the absence of visual cues. Target positions were presented in a randomized order. A one-way repeated measures ANOVA was conducted to examine the effect of plane on repositioning error. RESULTS: Repositioning error ranged from 4.7 ± 1.4° to 7.7 ± 3.1° as the target angle approached the end range of the plane angle. The ANOVA revealed that the plane angle did not affect repositioning error magnitude (p >.05). CONCLUSION: Due to the constant gravitational torque at 90° of shoulder elevation in all target positions, the muscle activation required to reach and maintain the target position against gravity would theoretically be unchanged in the various target positions. Musculotendinous mechanoreceptor activation may therefore play a dominant role in JPS acuity in functional movements, even approaching end range of motion, where the capsuloligamentous receptors become activated.