3D Augmented Reality Mirror Visual Feedback Applied to the Treatment of Unilateral Upper Extremity Neuropathic Pain.

Inclusion Criteria

• •Neuropathic pain in the unilateral upper extremity scored by DN4 questionnaire
• •At least 3 months symptom duration following injury
• •Minimum pain of 40 on a visual analogue scale (VAS);
• •A drug treatment regimen that was stable for at least 2 weeks.
• •Subjects were allowed to participate if they presented with any of the following: (1) A CRPS diagnosis, in accordance with the International Association for the Study of Pain criteria, Phantom Limb Pain (PLP), or spinal cord injury or plexopathy; and (2) an history of being treated before by conventional mirror therapy but, in their case, the mirror therapy failed.