B Chi1, B Chau2, E Yeo3, P Ta4. 1. Department of Physical Medicine and Rehabilitation, Loma Linda University Health, 11406 Loma Linda Drive, Suite 516, 92354 Loma Linda, CA, USA; Zucker School of Medicine at Hofstra/Northwell, 500 Hofstra Boulevard, 11549 Hempstead, NY, USA. Electronic address: bchi1@pride.hofstra.edu. 2. Department of Physical Medicine and Rehabilitation, Loma Linda University Health, 11406 Loma Linda Drive, Suite 516, 92354 Loma Linda, CA, USA; VA Loma Linda Healthcare System, 11201 Benton Street, 92357 Loma Linda, CA, USA. 3. Loma Linda University School of Medicine, 11175 Campus Street, 92350 Loma Linda, CA, USA. 4. Department of Physical Medicine and Rehabilitation, Loma Linda University Health, 11406 Loma Linda Drive, Suite 516, 92354 Loma Linda, CA, USA.
Abstract
BACKGROUND: Treatment of spinal cord injury (SCI)-associated neuropathic pain is challenging, with limited efficacy and no definitive options, and SCI patients often show resistance to pharmacologic treatment. Virtual reality (VR) therapy is a non-invasive, non-pharmacologic alternative with minimal adverse effects. OBJECTIVE: To investigate the effect of VR therapy on SCI-associated neuropathic pain in a systematic review. METHODS: Articles needed to 1) be written in English; 2) include adult subjects, with at least half the study population with a SCI diagnosis; 3) involve any form of VR therapy; and 4) assess neuropathic pain by quantitative outcome measures. Articles were searched in MEDLINE/PubMed, CINAHL®, EMBASE, and PsycINFO up to April 2018. Reference lists of retrieved articles were hand-searched. Methodologic quality was assessed by the Physiotherapy Evidence Database Score (PEDro) for randomized controlled trials and Modified Downs and Black Tool (D&B) for all other studies. Level of evidence was determined by using a modified Sackett scale. RESULTS: Among 333 studies identified, 9 included in this review (n=150 participants) evaluated 4 methods of VR therapy (virtual walking, VR-augmented training, virtual illusion, and VR hypnosis) for treating neuropathic pain in SCI patients. Each VR method reduced neuropathic pain: 4 studies supported virtual walking, and the other 3 VR methods were each supported by a different study. Combined treatment with virtual walking and transcranial direct current stimulation was the most effective. The quality of studies was a major limitation. CONCLUSION: VR therapy could reduce SCI-associated neuropathic pain, although the clinical significance of this analgesic effect is unclear. Clinical trials evaluating VR therapy as standalone and/or adjunct therapy for neuropathic pain in SCI patients are warranted.
BACKGROUND: Treatment of spinal cord injury (SCI)-associated neuropathic pain is challenging, with limited efficacy and no definitive options, and SCI patients often show resistance to pharmacologic treatment. Virtual reality (VR) therapy is a non-invasive, non-pharmacologic alternative with minimal adverse effects. OBJECTIVE: To investigate the effect of VR therapy on SCI-associated neuropathic pain in a systematic review. METHODS: Articles needed to 1) be written in English; 2) include adult subjects, with at least half the study population with a SCI diagnosis; 3) involve any form of VR therapy; and 4) assess neuropathic pain by quantitative outcome measures. Articles were searched in MEDLINE/PubMed, CINAHL®, EMBASE, and PsycINFO up to April 2018. Reference lists of retrieved articles were hand-searched. Methodologic quality was assessed by the Physiotherapy Evidence Database Score (PEDro) for randomized controlled trials and Modified Downs and Black Tool (D&B) for all other studies. Level of evidence was determined by using a modified Sackett scale. RESULTS: Among 333 studies identified, 9 included in this review (n=150 participants) evaluated 4 methods of VR therapy (virtual walking, VR-augmented training, virtual illusion, and VR hypnosis) for treating neuropathic pain in SCI patients. Each VR method reduced neuropathic pain: 4 studies supported virtual walking, and the other 3 VR methods were each supported by a different study. Combined treatment with virtual walking and transcranial direct current stimulation was the most effective. The quality of studies was a major limitation. CONCLUSION: VR therapy could reduce SCI-associated neuropathic pain, although the clinical significance of this analgesic effect is unclear. Clinical trials evaluating VR therapy as standalone and/or adjunct therapy for neuropathic pain in SCI patients are warranted.
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