This Week in Physical Medicine & Rehabilitation — Jun 25, 2026

Welcome to This Week in Physical Medicine & Rehabilitation. This week we're covering 10 notable papers spanning exercise-based interventions for chronic conditions, advanced spasticity management techniques, and innovative technology-driven approaches to rehabilitation. Let's dive in.

Managing lower limb spasticity effectively requires precise clinical decision-making, and diagnostic nerve blocks play a central role in this process. A systematic review published in PM & R examined nine studies to evaluate how well diagnostic nerve blocks predict the outcomes of subsequent spasticity treatments [4]. The researchers found that diagnostic nerve blocks resulted in highly similar spasticity and gait outcomes when compared to surgical neurotomy, particularly when looking at long-term results up to a year post-surgery. However, the blocks were far less predictive of the clinical response to chemodenervation with botulinum toxin or to passive range of motion assessments. This suggests that while diagnostic nerve blocks are excellent tools for surgical planning, clinicians should not rely on them as heavily to predict the success of botulinum toxin injections. For patients undergoing spasticity management, tibial nerve cryoneurolysis is emerging as a highly durable intervention. A prospective cohort study in the American Journal of Physical Medicine & Rehabilitation followed forty-four adults with spastic equinus and equinovarus foot who had a positive response to a diagnostic nerve block [9]. Over a one-year follow-up, tibial nerve cryoneurolysis led to long-lasting electrophysiological changes, including a significant decrease in H-reflex amplitude and a reduced H-reflex to motor response ratio. Clinically, the patients experienced a significant reduction in spasticity severity, with the median Modified Ashworth Scale score decreasing from four to two during knee extension, alongside substantial improvements in passive ankle dorsiflexion range of motion. This indicates that cryoneurolysis can provide a full year of spasticity relief, offering a valuable alternative to shorter-acting interventions. When working with pediatric populations, maintaining engagement during therapy is a constant challenge. A study in the Journal of NeuroEngineering and Rehabilitation addressed this by developing a multimodal machine-learning framework to automatically estimate engagement in twenty children with cerebral palsy undergoing robot-assisted gait training [6]. By integrating heart rate variability, facial infrared thermography, and exoskeleton-derived biomechanical features, the researchers achieved moderate classification accuracy, with an Extra Trees classifier yielding a macro-F1 score of roughly zero point six six. Interestingly, exoskeleton-derived torque features were the most influential predictors of patient engagement, demonstrating that physical interaction with the robotic device provides a direct, objective window into a child's active participation.

Moving to exercise-based rehabilitation, several new studies highlight the power of targeted activity programs for diverse clinical populations. First, for prefrail older adults, a twelve-week Tai Chi program can significantly alter physical trajectories. In a single-blind randomized controlled trial published in the Journal of NeuroEngineering and Rehabilitation, sixty-eight prefrail older adults were assigned to either a twenty-four-form Tai Chi program performed three times weekly or a health education control group [1]. After twelve weeks, the Tai Chi group demonstrated superior functional postural stability, showing shorter Timed Up-and-Go times, higher Berg Balance Scale and Short Physical Performance Battery scores, and reduced center-of-pressure sway under both eyes-open and eyes-closed conditions. Furthermore, three-dimensional gait analysis revealed significant improvements in gait speed and global gait-quality indices, which exploratory analysis linked to positive changes in hip kinematics and step length. This underscores Tai Chi as an accessible, highly effective intervention to reduce fall risk in prefrail seniors. Similarly, structured exercise benefits patients with neuropathic balance deficits. A multicenter randomized trial in the American Journal of Physical Medicine & Rehabilitation evaluated moderate-intensity endurance exercise in ninety-two adults with HIV-related distal symmetrical polyneuropathy [8]. The exercise group completed thirty-minute sessions three times a week for twelve weeks, resulting in significant improvements in both balance performance and walking ability, whereas the waitlist control group experienced no changes. For localized joint rehabilitation, blood flow restriction training is showing promise for chronic ankle instability. A meta-analysis of nine trials in PM & R found that blood flow restriction training led to significant improvements in balance, ankle strength—specifically during foot abduction and adduction—and patient-reported stability [5]. Although the analyzed studies primarily reported short-term outcomes and exhibited substantial heterogeneity, the findings support blood flow restriction as a viable rehabilitation adjunct that minimizes joint stress. Finally, when cardiorespiratory and metabolic fitness are the primary goals, high-intensity interval training, or HIIT, is proving superior to traditional approaches. A systematic review and meta-analysis of sixty-two trials in Clinical Rehabilitation evaluated HIIT in over two thousand adults with type 2 diabetes [10]. Compared to no exercise, HIIT increased peak oxygen consumption by over four and a half milliliters per kilogram per minute and reduced glycosylated hemoglobin by zero point seven percent. Notably, when compared directly to moderate-intensity continuous training, HIIT still yielded a small but statistically significant advantage, improving peak oxygen consumption by over one milliliter per kilogram per minute and further reducing glycosylated hemoglobin by zero point twelve percent, alongside improvements in blood pressure and lipid profiles.

Our final theme focuses on post-acute care transitions, self-management technologies, and global systems of care. Transitioning home after an acute hospital stay is a highly vulnerable period for survivors of traumatic brain injury. A prospective cohort study in the Archives of Physical Medicine and Rehabilitation followed fifty-one younger adults with traumatic brain injury during the first eight weeks post-discharge [3]. While physical health-related quality of life scores improved significantly over the eight weeks—with better physical recovery associated with male sex and less severe initial injuries—mental health-related quality of life scores did not improve significantly. This flat trajectory in mental health highlights a critical gap in early post-acute care, suggesting that rehabilitation programs must actively integrate psychological and cognitive support during the immediate transition to community living. To enhance independence in the community, patient-directed technology can play a major role. A pilot feasibility study in The Journal of Spinal Cord Medicine investigated the use of a handheld bladder ultrasound device connected to a smartphone or tablet for nine individuals with spinal cord injury performing clean intermittent catheterization [7]. After less than an hour of training, all participants and caregivers achieved competency in estimating bladder volumes. Using the ultrasound device to guide catheterization decisions resulted in a significant reduction in daily catheterizations, decreasing from an average of five and a half to four and a half per day, without any changes in fluid intake or catheterized volumes. This suggests that handheld ultrasound is a highly usable tool that can safely prevent unnecessary invasive procedures. On a global scale, the delivery of rehabilitation systems varies widely. The 2025 Global Cardiac Rehabilitation Audit, published in PLoS Medicine, updated data from over fifteen hundred programs across ninety countries to analyze delivery trends [2]. The audit revealed that upper-middle-income countries offered the highest number of core components, while lower-middle-income countries assessed significantly fewer cardiovascular risk factors. Alarmingly, the audit also identified a significant decline in the number of patient education hours delivered within supervised programs in high-income countries since 2016, pointing to a potential erosion of comprehensive lifestyle counseling in resource-rich settings.

If you only have time for one paper this week, make it the pilot feasibility study on handheld bladder ultrasound for individuals with spinal cord injury from The Journal of Spinal Cord Medicine [7]. This study elegantly demonstrates how empowering patients with portable diagnostic technology can directly reduce the daily burden of invasive catheterizations, representing a highly practical advancement in neurogenic bladder self-management.

Here are the key takeaways from this week in Physical Medicine & Rehabilitation. First, diagnostic nerve blocks are highly predictive of spasticity and gait outcomes following surgical neurotomy, but they are less reliable for predicting responses to botulinum toxin chemodenervation. Second, tibial nerve cryoneurolysis provides a durable, one-year therapeutic window for adults with spastic equinus, backed by both clinical improvements and objective electrophysiological changes. Third, structured, moderate-intensity exercise—whether through Tai Chi for prefrail older adults or endurance training for patients with HIV-related neuropathy—consistently yields significant improvements in balance and gait. Fourth, high-intensity interval training is highly effective for patients with type 2 diabetes, offering superior improvements in peak oxygen consumption and glycemic control compared to moderate-intensity continuous training. Fifth, the immediate eight-week post-hospitalization period for younger brain injury survivors is a critical window where physical recovery occurs, but mental quality of life frequently plateaus, indicating a major gap in transitional psychiatric and emotional support.

That's your roundup for This Week in Physical Medicine & Rehabilitation. The full transcript and references are available on the episode page in your AudioScholar library. This is an AI-curated summary — for clinical decisions, always consult primary sources and current guidelines. See you next week.

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This is an automated summary generated by artificial intelligence, which can make mistakes. Always review the original source materials.