Human Studies

Sensory dysfunction is a common consequence of many forms of neurological injury, including stroke and nerve damage. Rehabilitative paradigms that incorporate sensory retraining can provide modest benefits, but the majority of patients are left with lasting sensory loss. We have developed a novel strategy that uses closed-loop vagus nerve stimulation (VNS) paired with tactile rehabilitation to enhance synaptic plasticity and facilitate recovery of sensory function.

The purpose of the study was to explore clinical management for new cases of musculoskeletal pain that are likely chronic. We used data from the National Ambulatory Medical Care Survey, 2007-2015, identifying visits with a new chronic musculoskeletal pain condition using pre-determined ICD-9 codes. We documented prescribing of non-opioid pain medication, opioids, physical therapy (PT), counseling, and other nonpharmacologic treatments and explored associations between patient and provider factors for each of these treatments. There were 111,994 visits over the 9-year period for a new case of chronic musculoskeletal pain, representing an average of 36.8 million weighted visits per year or approximately 11.8% of the population. Proportions that were prescribed nonopioid medication, opioids, PT, counseling and other nonpharmacologic treatments were: 40.2, 21.5, 10.0, 15.2 and 14.3 respectively. Patient age was associated with type of treatment with a young to old gradient for other nonpharmacologic treatments, PT, opioids, counseling and other medications. Orthopedists were less likely to prescribe pharmacological treatments than family practice physicians and more likely to prescribe PT. Physicians who used the electronic medical record were more likely to prescribe opioids. Contrary to practice guidelines for managing musculoskeletal pain, many patients are prescribed opioids for a new chronic musculoskeletal problem. PERSPECTIVE: We outlined in a representative sample of Americans what treatments are being prescribed for new cases of likely chronic musculoskeletal pain. Opioid prescription was double that of physical therapy. Using the electronic medical record was associated with more opioid prescription- a novel finding that should be corroborated by future research.

Chronic spinal pain is disabling and has high personal and societal costs. Risk factors include behavioral factors; however, little is known about the role of diet quality and its association with spinal pain. Higher diet quality and consumption of macronutrients that drive higher diet quality were hypothesized to be associated with lower odds of having spinal pain.

One out of seven women will develop a state of chronic postoperative pain following robot-assisted hysterectomy for endometrial cancer. Recently, metabolic studies have indicated that circulating lipids and lipoproteins could act as nociceptive modulators and thereby influence the induction and perpetuation of pain. The objectives of this explorative study were (1) to examine the preoperative serologic variations in concentrations of lipids, lipoproteins, and various low-molecular metabolites in patients with and without chronic postoperative pain after robot-assisted hysterectomy and (2) to explore if any of these serological biomarkers were predictive for development of chronic postoperative pain.

Opioid prescriptions in the surgical setting have been implicated as contributors to the opioid epidemic. The authors hypothesized that a multidisciplinary approach to perioperative pain management for patients on chronic opioid therapy could decrease postoperative opioid requirements while reducing postoperative pain scores and improving functional outcomes. Therefore, a Perioperative Pain Program (PPP) for chronic opioid users was implemented. This study presents outcomes from the first 9 months of the PPP. Sixty-one patients met the inclusion criteria. Opioid consumption in morphine milligram equivalent (MME) was calculated and physical and health status of patients was assessed with the Brief Pain Inventory, Short-Form McGill Pain Questionnaire, and Short Form-12. Preliminary results showed significant reduction in MME, improved pain scores, and improved function for surgical patients on chronic opioids. PPP effectively reduced opioid usage without negatively influencing patient-reported outcomes, such as physical pain score assessment and health-related quality of life.

To evaluate changes in cortical thickness and right posterior insula (r-pIns) gamma-aminobutyric acid (GABA) concentrations in veterans with fibromyalgia treated with auricular percutaneous electric nerve field stimulation (PENFS).