Virtual Reality and Older Adult Knee OA

The Feasibility & Effectiveness of Virtual Reality in Reducing Pain for Older Adults With Knee Osteoarthritis

At the Brigham and Women's Hospital (BWH) Pain Management Center (PMC), knee OA is one of the most common conditions causing older adults to experience chronic pain. At this site, the core treatments of education, physical activity, and weight management are addressed, and then both pharmacological and nonpharmacological treatment options are available for patients living with chronic pain. Pharmacological treatments, such as topical and oral nonsteroidal anti-inflammatory drugs (NSAIDs), acetaminophen, steroidal and non-steroidal injections, and prescription medications are currently the most commonly used treatments for chronic pain, but are also associated with limited benefits and dangerous side effects, such as addiction. Clients can also opt for nonpharmacological pain treatments at the PMC, such as acupuncture, reiki, physical therapy, and yoga, which are currently being researched at the clinic as well. The critical gap addressed with this pilot study is the need for additional safe and feasible treatment options for the growing population of older adults with chronic knee OA, as there is limited existing research on the effects of nonpharmacological treatments on this population. While past studies at the PMC have looked at the physiological mechanisms involved with chronic knee OA and the older adult population, the site has had limited funding to research nonpharmacological treatments such as virtual reality. In fact, there is limited evidence in the literature on the effects of virtual reality in reducing pain specifically for the older adult population.

Virtual reality has been shown to be feasible for a variety of populations, including young people with autism experiencing specific phobia, pediatric burn patients, and young adults. However, there is limited evidence on the feasibility of VR for treating pain for the older adult population. Preliminary studies demonstrate the feasibility and safe qualities of immersive VR as a treatment tool for older adults with cognitive and physical impairments. One study demonstrated that older adults reported no negative side effects and 76% of the group wanted to try VR again. Furthermore, preliminary evidence on the feasibility of use in the clinic in terms of the construct of time was demonstrated. Another study found that young adults and older adults who engaged in an immersive spatial navigation VR environment reported similar experiences, demonstrating that older adults experienced acceptable adverse effects and reported enjoyment through the VR immersion. Further recent studies provide evidence on the attitudes and treatment acceptability of older adults with chronic musculoskeletal pain towards VR as a distraction therapy for chronic pain exacerbations. These researchers discovered that 73.4% of the participants found VR to be an acceptable way to manage pain, and 73.3% reported they would be willing to use it for their pain. Only 26% of the participants experienced side effects such as general discomfort or eyestrain. Additionally, the qualitative data in this study suggests greater ease of use with sufficient practice and a preference towards relaxation, meditation, or biofeedback simulations with realistic images. Thirty percent of older adults in the United States report experiencing chronic pain, with 41% of this subset of the population experiencing chronic joint pain. Knee osteoarthritis (OA) affects 37% of individuals aged 60 years or older who participated in the National Health and Nutrition Examination. This condition typically involves pain, stiffness, reduced joint motion and muscle weakness, and chronic pain that can have profound effects on physical function, psychological parameters, and overall quality of life. In knee OA, cartilage in the knee is lost and there is failed repair of joint damage, as OA is a disease of the whole joint. There is also often a discrepancy between severity of symptoms and severity of knee OA, which may relate to pain sensitization, adaptation to chronic pain, or reduction in activity to avoid pain. In Virtual Reality (VR) people experience a three-dimensional, computer-generated environment via a computer headset. There are several mechanisms through which VR has been shown to effectively reduce pain. For one, gate theory of attention proposes that VR reduces perception of pain by absorbing and diverting attention away from pain. Dr. Brennan Spiegel, director of Cedars-Sinai Health Services Research, reports that VR's ability to distract the brain allows the brain to relax. He states that this modality "triggers signals that release natural pain-killing opioids from the spinal cord, essentially closing the gate, blocking the pain". Therefore, VR distraction may be a useful tool for clinicians who work with clients experiencing a variety of pain-related conditions, such as chronic knee osteoarthritis. This pilot study will build off of these preliminary studies by working from the basis that older adults generally enjoy their immersive VR experience and including some of the relevant key requirements for immersive environments such as individual briefing and user-friendly handling. There are still many questions that need to be answered about the feasibility of VR as a clinical tool and its effectiveness in decreasing chronic pain, specifically for older adults. Therefore, this pilot study will look more into these topic areas through a subset of the population of older adults with chronic pain. Currently, there has been very little research that has examined the effect of VR on chronic pain, particularly for the older adult population. Knowledge on the effectiveness of VR for chronic pain for older adults is necessary to determine best methods to feasibly integrate VR into clinical practice.

Participants will be set up in the VR equipment. They will engage and follow along with a 10-20 minute guided meditation through the VR. The meditation program may include simulated movement, relaxing music, and the voice of a meditation guide. The research team member will supervise the session, ensuring safety of the subject is maintained.

Participants will be set up in the VR equipment. They will engage and follow along with a 10-20 minute guided meditation through the VR. The meditation program may include simulated movement, relaxing music, and the voice of a meditation guide. The research team member will supervise the session, ensuring safety of the subject is maintained.

Measures the intensity of pain on an 11-point scale, ranging from 0-10. 0 is no "pain", and 10 is "pain as bad as you can imagine".

Fifteen-item self-report questionnaire that measures participant's various levels of pain severity in the past 24 hours, and perception of the degree to which pain prevents participation in important daily activities (e.g. work, socialization) and enjoyment of life. Eight pain severity items are rated on a 11-point scale of 0 (no pain) to 10 (pain as bad as you can imagine). Seven pain interference items are rated on a 11-point scale of 0 (does not interfere) to 10 (completely interferes).

24-item self report questionnaire that measures how often participant experiences feelings related to depression, anxiety and anger in the past seven days. These questionnaires have been modified to ask about the past 24 hours. The questionnaire uses a 5-point Likert scale, from 1 (never) to 5 (always). This questionnaire will assess the participant's psychological state.

This ten-item self-report questionnaire measures the extent to which the participant felt various emotions right now. This questionnaire uses a 5-point Likert scale, from 1 (very slightly or not at all) to 5 (extremely). This questionnaire will assess the participant's psychological state at all three data collection points.

1-item self-report questionnaire that measures subject's pain since the start of the study intervention using a 7-point Likert scale from 0 (very much improved) to 6 (very much worse). This questionnaire will determine if the subject found the VR intervention to be helpful in reducing their pain.

Thirteen-item self-report questionnaire that collects data on the types of thoughts and feelings the participants have when in pain. The participants will be asked to rank the degree to which they have certain thoughts and feelings when they are in pain using a 5-point Likert scale, from 0 (not at all) to 4 (all the time).

30-item self-report questionnaire that measures participant's perceptions of and attitudes towards their pain. The participants will be asked to rank how true each statement is for them using a 5-point Likert scale, from 0 (very untrue) to 4 (very true).

Obtains demographics, medical history, perceptions/attitudes of pain, and experiences with VR. Perceptions and attitudes towards pain will be obtained using the Pain Catastrophizing Scale17 and the Survey of Pain Attitudes19.

List of sixteen symptoms which are commonly experienced by users of virtual reality systems. Participants rate the severity of these symptoms while using the VR system using a 4-point Likert scale from 1 (none) to 4 (severe). This questionnaire will monitor the extent of motion sickness in our participants.

Twelve-item self-report questionnaire that measures the participant's perception of how engaged they were with the experience using a 5-point Likert scale from 1 (strongly disagree) to 5 (strongly agree). This questionnaire will determine immersion into VR.

Fourteen-item self-report questionnaire that measures participant's perception of presence in computer-made Virtual Environments using various 7-point Likert scales. This questionnaire will determine immersion into VR.

Thirteen-item self-report questionnaire that asks subjects to rate the frequency of occurrence of various experiences, such as fatigue, pleasant/unpleasant thoughts, and thoughts about planning or memories, during meditation intervention to evaluate quality of meditation immersion. Uses 5-point Likert scale from 1 (never) to 5 (almost constantly).

People in VR group will also be asked a series of open-ended questions about their experiences with VR and the study. Their responses will be audio recorded and later transcribed. These files will be stored in a password protected file that only study personnel have access to.

Inclusion Criteria: Adults over the age of 60 years old (no upper limit) Diagnosis of chronic knee osteoarthritis with pain in at least one knee English-speaking Willing and able to visit the PMC campus to participate in the study Exclusion Criteria: Received steroid injection within 2 weeks of VR session Unwilling to put on VR headset Diagnosed seizure disorder Cognitive impairment Hearing/visual deficit Active, contagious skin infection Eye infections Has a pacemaker or defibrillator Has a hearing aid

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