ABSTRACT
Objective: This pilot study explored the effects of therapeutic immersive virtual reality (VR) on pain in upper limb complex regional pain syndrome (CRPS). While acute pain relief with VR has been studied in multiple populations, there is little data on the use of this modality in treating chronic pain, especially CRPS. Participants: Volunteer participants were recruited from outpatient rehabilitation services. Inclusion criteria required the diagnosis of CRPS in at least one upper limb and the ability to communicate in English to receive instructions from study personnel. A total of eight participants were recruited, with six fully completing the study. Interventions: An immersive virtual three-dimensional interactive kitchen environment was designed that allowed visualization of and object manipulation with virtual hands. Participants performed tasks representative of daily activities, as well as guided visualization exercises for a total of 10 sessions. Main Outcome Measure: Preand post-session pain scale measurements (Short Form McGill Pain Questionnaire, Visual Analog Scale, and Wong-Baker FACES) and subjective feedback were collected with each session. Results: Four of the six participants that completed the study reported subjective improvement of their pain and daily function. However, objective pain scales had limited correlation to reported subjective relief. Conclusions: Immersive virtual reality might provide subjective analgesia and functional improvement in select patients with upper limb complex regional pain syndrome, but objective data is lacking.
ABSTRACT
Objective: The goal of this review was to evaluate the evidence regarding the use of virtual reality (VR) therapy for improvement of mobility in patients with spinal cord injury (SCI). Methods: A comprehensive literature search was conducted utilizing PubMed, CINAHL, EMBASE, and PsycINFO databases in April 2018. The phrase "virtual reality" and a combination of "spinal cord injury," "tetraplegia," "quadriplegia," or "paraplegia" were used as search terms. References included selected articles were reviewed as well. Articles were filtered based on the following inclusion criteria: 1) written in English, 2) peer-reviewed, 3) VR used for patients with SCI, and 4) changes in motor function evaluated. Main outcome measurements: Common outcomes of mobility assessment used in the studies included the Functional Reach Test (FRT), Functional Independence Measure (FIM), Limit of Stability (LOS), Berg Balance Scale (BBS), Timed Up and Go (TUG) test, and Walking Index for Spinal Cord Injury II (WISCI II) scale. Results: Seven of the nine reviewed articles were case series, while two were randomized, controlled trials. Reviewed literature demonstrated significant benefit in FRT, BBS, gait speed, muscle strength, SCIM, and WISCI-II using VR therapy. Voluntary muscle control improvement was also observed. However, no significant differences were found with regard to finehand motor movement. Conclusion: This literature review demonstrated mostly positive outcomes for the use of VR for SCI rehabilitation but were limited in quality and scope. Larger, multicenter trials are still needed.
ABSTRACT
Objective: Phantom limb pain is a condition frequently experienced after amputation. One treatment for phantom limb pain is traditional mirror therapy, yet some patients do not respond to this intervention, and immersive virtual reality mirror therapy offers some potential advantages. We report the case of a patient with severe phantom limb pain following an upper limb amputation and successful treatment with therapy in a custom virtual reality environment. Methods: An interactive 3-D kitchen environment was developed based on the principles of mirror therapy to allow for control of virtual hands while wearing a motion-tracked, head-mounted virtual reality display. The patient used myoelectric control of a virtual hand as well as motion-tracking control in this setting for five therapy sessions. Pain scale measurements and subjective feedback was elicited at each session. Results: Analysis of the measured pain scales showed statistically significant decreases per session [Visual Analog Scale, Short Form McGill Pain Questionnaire, and Wong-Baker FACES pain scores decreased by 55 percent (p=0.0143), 60 percent (p=0.023), and 90 percent (p=0.0024), respectively]. Significant subjective pain relief persisting between sessions was also reported, as well as marked immersion within the virtual environments. On followup at six weeks, the patient noted continued decrease in phantom limb pain symptoms. Conclusions: Currently available immersive virtual reality technology with myolectric and motion tracking control may represent a possible therapy option for treatment-resistant phantom limb pain.
ABSTRACT
PURPOSE: Great vessel injury during posterior 3-column osteotomy is rare, but potentially fatal. Literature review revealed limited data guiding spine surgeons during this major catastrophe. In this study our aim was first, to present our case of mortality; second, to discuss a novel technique that can be performed to temporize hemorrhage in a life-threatening situation where an iatrogenic great vessel injury occurs and hemodynamic stability cannot be achieved through usual means of hemostasis; third, a cadaveric study to determine if this novel technique is feasible. METHODS: Three fresh cadavers including thoracic, lumbar, and pelvis were used. A thoraco-abdominal approach was used to access great vessels at the level of L3. The aorta and vena cava were identified and tagged. The cadavers were turned prone; a pedicle subtraction osteotomy was performed at the level of L3. A novel posterior peri-vertebral approach was used to reach the great vessels. The aorta and vena cava were occluded digitally with this approach and success confirmed visually through the thoraco-abdominal incision. Timing of the procedure and structures at risk were recorded. RESULTS: In all three cadavers, we were able to successfully occlude the great vessels from a prone position. The average amount of time it took to digitally occlude the great vessels was less than a minute. Structures at risk included the L1 and L2 nerve roots, lumbosacral plexus, and the sympathetic trunk. CONCLUSIONS: The posterior peri-vertebral approach can potentially be used by a spine surgeon during a life-threatening situation to temporarily occlude great vessel hemorrhage while waiting for the assistance of a vascular/trauma team.
