Occupational nerve injuries.

Occupational nerve injuries span a broad array of pathologies and contribute toward functional limitation, disability, and economic impact. Early and accurate recognition, treatment, and management of workplace factors rely on a thorough understanding of the anatomic and biomechanical factors that drive nerve injury. This review explores the interplay between anatomy, biomechanics, and nerve pathology common to occupational nerve injury and provides the treating physician with a rational, evidence-based approach to diagnosis and to occupational aspects of management. Assessment of potential occupational nerve injury begins with a detailed understanding of the employee's work duties through a biomechanical lens. One must consider likelihood of occupational causation while accounting for predisposing conditions or preexisting symptoms. Beyond overt crush injury or laceration, potential mechanisms of nerve injury, with effects compounded over time, include compression, stretch, vibration, and repetitive or high-force movements of regional muscles and joints. Injury often occurs at nerve locations that experience higher pressures, changes in pressure over time, or abrupt changes in trajectory, often near a tethered point. This understanding, coupled with condition-specific knowledge presented in this review, equips managing physicians to diagnose occupational nerve injury and enhance treatment recommendations with rational activity modifications or equipment that can protect the nerve or decrease likelihood of continued injury. Long-term management often involves follow-up to assess effectiveness of interventions in the setting of the work environment, with gradual progression of the worker toward return to unrestricted duty or to a point of maximal medical improvement.

Serial electrodiagnostic testing: Utility and indications in adult neurological disorders.

Although existing guidelines address electrodiagnostic (EDX) testing in identifying neuromuscular conditions, guidance regarding the uses and limitations of serial (or repeat) EDX testing is limited. By assessing neurophysiological change longitudinally across time, serial electrodiagnosis can clarify a diagnosis and potentially provide valuable prognostic information. This monograph presents four broad indications for serial electrodiagnosis in adult peripheral neurological disorders. First, where clinical change has raised suspicion for a new or ongoing lesion, EDX reassessment for spatial spread of abnormality, involvement of previously normal muscle or nerve, and/or evolving pathophysiology can clarify a diagnosis. Second, where diagnosis of a progressive neuromuscular condition is uncertain, electrophysiological data from a second time point can confirm or refute suspicion. Third, to establish prognosis after a static nerve injury, a repeat study can assess the presence and extent of reinnervation. Finally, faced with a limited initial study (as when complicated by patient or environmental factors), a repeat EDX study can supplement missing or limited data to provide needed clarity. Repeat EDX studies carry certain limitations, however, such as with prognostication in the setting of remote or chronic lesions, sensory predominant fascicular injury, or mild axonal injury. Nevertheless, serial electrodiagnosis remains a valuable and underused tool in the diagnostic and prognostic evaluation of neuromuscular conditions.

What would you like to ask your audience? Enhancing feedback value in PM&R grand rounds through customizable evaluation forms with presenter-generated questions.

BACKGROUND: Feedback and evaluation are important in the professional development of academic physiatrists. Yet, physical medicine and rehabilitation (PM&R) learners giving academic presentations receive limited narrative feedback through generic evaluation forms. OBJECTIVE: To assess whether customizable evaluation forms that integrate a presenter's specific questions would be associated with an increase in quantity and quality of narrative feedback received from the audience. DESIGN: Separate samples pre-post intervention study. SETTING: A large academic PM&R department's grand rounds. PARTICIPANTS: PM&R faculty and trainees attending grand rounds (10-50 attendees with one presenter per session). The study included 20 presentations pre intervention (across 1 year) and 38 presentations post intervention (across about 3 years). INTERVENTION: A customizable evaluation form that integrates a presenter's own questions into a tailored evaluation form comprising both standardized and presenter-built questions. MAIN OUTCOME MEASURE(S): Narrative feedback quantity was defined as the mean percentage and number of evaluation forms per presentation with at least one comment. Narrative feedback quality included three metrics: mean percentage and number of evaluation forms per presentation with comments that (1) contained ≥8 words, (2) referenced something specific, and (3) offered an actionable suggestion. RESULTS: Compared to preintervention, presentations in the postintervention period had a greater mean percentage of evaluation forms containing at least one comment (pre = 33.4%, post =74.7%, p < .001), a comment that contained ≥8 words (pre = 20.2%, post = 44.2%, p < .001), a comment that referenced something specific (pre = 19.6%, post = 55.1%, p < .001), and a comment that offered an actionable suggestion (pre = 10.2%, post = 22.2%, p < .001). CONCLUSIONS: Use of a customizable evaluation form in PM&R grand rounds that integrates a presenter's own questions was associated with a greater mean percentage of evaluation forms containing comments as well as comments meeting quality metrics related to length, specificity, and actionability.

Challenges and Opportunities in Academic Physiatry: An Environmental Scan.

ABSTRACT: Environmental scans determine trends in an organization's or field's internal and external environment. The results can help shape goals, inform strategic decision making, and direct future actions. The Association of Academic Physiatrists convened a strategic planning group in 2020, composed of physiatrists representing a diversity of professional roles, career stages, race and ethnicity, gender, disability status, and geographic areas of practice. This strategic planning group performed an environmental scan to assess the forces, trends, challenges, and opportunities affecting both the Association of Academic Physiatrists and the entire field of academic physiatry (also known as physical medicine and rehabilitation, physical and rehabilitation medicine, and rehabilitation medicine). This article presents aspects of the environmental scan thought to be most pertinent to the field of academic physiatry organized within the following five themes: (1) Macro/Societal Trends, (2) Technological Advancements, (3) Diversity and Global Outreach, (4) Economy, and (5) Education/Learning Environment. The challenges and opportunities presented here can provide a roadmap for the field to thrive within the complex and evolving healthcare systems in the United States and globally.

Diving into debate: Comparing discussion-based and single-presenter journal club formats in a large PM&R department.

BACKGROUND: Journal clubs in physical medicine and rehabilitation (PM&R) advance the educational mission by uniting colleagues to learn of literature updates, consider clinical applications, practice critical thinking, and engage in lively dialogue and community. Although discussion-based journal clubs have been shown to enhance quality, a model for their application across a large and clinically diverse department of PM&R has not been described, nor has one been evaluated in comparison to a single-speaker podium format. OBJECTIVE: To develop a discussion-based PM&R department-wide journal club, present elements of the journal club model in a manner that would enable replication, and assess effectiveness as perceived by participants, compared to the prior (podium-based, single-speaker) format. It was hypothesized that a discussion-based journal club would more effectively achieve educational goals and would be perceived by participants to be of greater quality and value. DESIGN: Pre-post educational intervention study, using surveys of PM&R resident and faculty participants. Survey items used a 5-point Likert scale. Unpaired 2-tailed t-tests were used to compare the formats. SETTING: A large academic PM&R department. PARTICIPANTS: PM&R faculty, residents, fellows: 26 respondents (preintervention) and 26 respondents (postintervention) out of a total of 94 and 98 people invited to participate, respectively. INTERVENTIONS: A discussion-based departmental journal club was designed and implemented, replacing the previous single-speaker, podium-based journal club. MAIN OUTCOME MEASURES: Pre- and post- intervention respondent ratings of (a) journal club quality and value, and (b) effectiveness in achieving specific educational goals. RESULTS: Compared to the traditional format, the discussion-based format more effectively met the educational objectives, was of higher quality and value as perceived by respondents, and increased desire to attend the activity. CONCLUSIONS: This discussion-based journal club format can serve as a model for academic PM&R programs looking to enhance the educational value of journal club.

Implications of median sensory study to the thumb and deltoid/biceps motor unit recruitment on identifying C6 root avulsion in upper neonatal brachial plexus palsy.

INTRODUCTION/AIMS: Anatomic representation suggests that a median sensory nerve conduction study recording the thumb (median D1 NCS) may effectively assess upper neonatal brachial plexus palsy (NBPP). We sought to determine the feasibility of technique, establish reference data, and assess its ability to: (a) identify focal upper plexus lesions; and (b) identify C6 root avulsion. In a secondary analysis, we explored the association between absence/presence of motor unit action potentials (MUAPs) during needle electromyography (EMG) of the deltoid and biceps brachii muscles and C6 avulsion status. METHODS: A retrospective chart review was performed of surgical patients with severe upper NBPP who ultimately underwent surgical reconstruction (between 2017 and 2020). Median D1 sensory nerve action potential (SNAP) amplitude ranges were determined in affected and contralateral limbs and analyzed by C6 root avulsion status. Also, presence/absence of MUAPs during EMG of the deltoid and biceps brachii was compared between C6 avulsion patients and controls. RESULTS: Thirty-eight patients were included in our analysis. A median D1 NCS study was readily performed, showing a contralateral limb mean amplitude of 27.42 µV (range, 3.8-54.7 µV). Most patients had a low ipsilateral median D1 SNAP amplitude, regardless of C6 avulsion status. Detectable MUAPs in either deltoid or biceps brachii on EMG were atypical in C6 root avulsion. DISCUSSION: The median D1 NCS identifies upper NBPP, but does not distinguish C6 avulsions from post-ganglionic lesions, likely due to the frequent co-occurrence of post-ganglionic axonal disruption. The presence of MUAPs on deltoid/biceps brachii EMG suggests C6 avulsion is unlikely.

An Atypical Presentation of Hirayama Disease With Lower Limb Myelopathic Symptoms Only.

ABSTRACT: Hirayama disease is a rare neuromuscular disease, which classically presents as lower motor neuron weakness and atrophy in the upper limbs and specifically the C7-T1 myotomes. Proposed pathogenesis relates to microcirculatory dysfunction in the territory of the anterior spinal artery caused by epidural venous plexus engorgement with forward displacement of the posterior dura and spinal cord during neck flexion, leading to chronic ischemic changes in the lower cervical anterior horn cells. Diagnosis hinges upon clinical and radiographic findings, and treatment is generally conservative given the self-limited nature of the disease. Here, we present a case with classic radiologic findings of Hirayama disease with lower limb myelopathic findings alone. This case raises the question of whether the pathophysiology leading to focal anterior cervical myelopathy in forward flexion could present along a broader clinical spectrum than previously recognized, from complete asymptomaticity, to classic Hirayama disease with C7-T1 atrophy, to cervical myelopathy with long tract signs.

Working With People With Disabilities: An Interactive Video/Lecture Session for First- and Second-Year Medical Students.

Introduction: Negative physician attitudes toward people with disabilities create barriers to health care for these individuals. Barriers can include withholding of standard medical and preventive care, provision of inferior treatment, and patient mistrust of the health care system. Thus, preparing medical students to care for people with disabilities is especially important. Educating health care providers early in their careers can shape their interactions while their approach to patients is still deliberate. Methods: We developed an interactive introductory session for first- and second-year medical students on how to approach individuals with observable disability in clinical settings. In the session, we explored-through a combination of lecture, discussion, and patient perspective-how negative physician behavior can create health care barriers, as well as proposed a framework for approaching patients with disability. We presented this session in two formats: (a) a slide deck with instructions that a presenter can use to deliver the session and (b) a stand-alone video introduction with reflective questions. Results: The session was evaluated by 151 first-year medical students, with 79% reporting either somewhat or much more comfort approaching individuals with disability following the session. Discussion: The integration of patient and physician perspectives, as well as the use of reflective questions, provides the opportunity for students to actively explore reasons for provider discomfort with disability and delineate clinical setting strategies to approach patients with disability.

Electrophysiological Changes After Human Muscle Tear: A Potential Confounder.

The goal of this prospective electrophysiologic study is to describe the chronological electromyographic findings observed in a human gastrocnemius muscle after a traumatic tear. A 30-yr-old man sustained a tear of the medial gastrocnemius. Needle electromyography was performed serially at 5, 15, and 26 wks after injury, with the contralateral gastrocnemius muscle serving as a control. Audiovisual recordings of the studies were analyzed in a blinded manner. Five weeks after injury, the affected gastrocnemius displayed increased insertional activity on electromyography. By 15-wk postinjury, insertional activity had diminished. However, motor unit action potentials showed chronic neurogenic morphological changes not previously observed. These changes persisted 26 wks after injury. The study findings reveal a chronological trajectory of increased insertional activity followed by reinnervation changes in a human muscle after local trauma, paralleling a course previously observed in a rat model. Electrodiagnosticians unaware of this phenomenon are at risk for making erroneous interpretations when examining patients with a history of muscle trauma.

Value-Added Electrodiagnostics: Targeting Interventions for Fall Risk Reduction.

Walking confers numerous health benefits, particularly for middle-aged and older patients with diabetes and metabolic syndrome. Nevertheless, it brings a risk of injurious falls, especially among populations with diabetes and metabolic syndrome-related distal neuromuscular decline and frank neuropathy. Those who stand to benefit most from walking are at greatest risk. Development of practical clinical tools to more precisely quantify neuromuscular function and link it to mobility outcomes will help clinicians target interventions toward those at risk for falls. Electrodiagnosis, with inclusion of several newer techniques, serves as a promising tool for objective evaluation of distal neuromuscular function.