Virtual Walking for Neuropathic Pain in Spinal Cord Injury

The University of Alabama at Birmingham logo

The University of Alabama at Birmingham

Status

Completed

Conditions

Neuropathic Pain
Spinal Cord Injury

Treatments

Behavioral: Virtual walking
Behavioral: Wheeling tape

Study type

Interventional

Funder types

Other

Identifiers

NCT01884662
H133N110008VWalking

Details and patient eligibility

About

Spinal cord injury neuropathic pain (SCI-NP) is a common problem, and when severe, is one of the most problematic of secondary conditions that is minimally to modestly responsive to currently available treatments. It is usually described as burning or stabbing, and is located at or below the level at which their sensation changes from normal to impaired; persons with no feeling at all in their legs for example can experience pain in the legs. The purpose of this project is to further investigate the use of a novel visual stimulation treatment; a technique that has shown benefit in other populations with chronic pain secondary to deafferentation. To accomplish this, a novel treatment - virtual reality (VR) walking - will be examined. Should this treatment show benefit, a portable, accessible means of treatment will be available for persons with SCI and for whom transportation to health care providers is often difficult.

Full description

This treatment will be investigated in two-phase project: Phase 1: Determine the efficacy of VR treatments as a home-based approach and determine the effect of VR treatment on reversal of maladaptive cortical reorganization associated with SCI-NP, as has been shown in other populations with neuropathic pain secondary to deafferentation. Phase 2: Determine the effectiveness and immediate analgesic effect of VR treatment among persons with both tetraplegia and paraplegia. The primary outcome variable of this research is the severity of SCI-NP with a secondary outcome of level of pain interference with daily activities. In the phantom pain literature for persons with amputations, treatment paradigms based on visual stimulation, called mirror therapies, have proven helpful. These approaches involve the person viewing a mirror image of their intact limb to produce the visual illusion of a return of the missing limb, often with a marked reduction in pain following. Investigations have demonstrated that such approaches reduce pain in some individuals and that this change is associated with reversal of the functional reorganization in the somatosensory cortex. There has been one study of neuropathic pain in SCI that demonstrated good neuropathic pain relief with a mirror image of the upper half of the individual with SCI with the lower half of their body represented by a rear projection screen generated image of walking legs. We have collaborated with this author, and developed and pilot tested a virtual walking DVD that is presented via virtual reality goggles to enhance the first person sense of immersion. Results were sufficiently encouraging to cause us to seek funding for current, broader project

Enrollment

67 patients

Sex

All

Ages

19 to 65 years old

Volunteers

Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria: traumatic onset SCI, at least three months post onset, between 19 and 65; at least 6th grade reading level; neuropathic pain averaging at least 4/10.

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Exclusion Criteria: Unable to independently transfer to the fMRI scanning table, current pressures sores, contraindications to scanning; non-compliance with a pre-assignment task.

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Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

67 participants in 2 patient groups

Virtual walking
Experimental group
Description:
A 3D video of legs walking from a first person perspective have been developed in consultation with persons with SCI and virtual reality experts. Participants are provided with a 3D monitor and Blue Ray player for daily viewing of the tape for two weeks.
Treatment:
Behavioral: Virtual walking
Wheeling tape
Active Comparator group
Description:
A 3D video was produced of legs in a wheelchair covering the identical conditions of the walking experimental video.
Treatment:
Behavioral: Wheeling tape

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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