Prisms to Shift Pain Away: Pathophysiological and Therapeutic Exploration of CRPS with Prism Adaptation

Figure 3

Initial reference frame evaluation for each patient (measured at inclusion), in degrees of angle deviation from objective midline. No systematic bias was found in terms of CRPS side: most variables are fairly symmetrically distributed around the sagittal axis. The only significant trends were found for the healthy hand straight-ahead demonstration which was biased toward the left for both left (RMSA) and right (LMSA) CRPS. RMSA: manual straight-ahead for the right hand. LMSA: manual straight-ahead for the left hand. VSA1m: visual straight-ahead at 1 meter. VSA2m: visual straight-ahead at 2 meters. Circles: right CRPS. Triangles: left CRPS.