AI Article Synopsis

  • Degenerative cervical myelopathy is a leading cause of disability in older adults, and surgical decompression is the recommended treatment for symptomatic patients; our study utilized navigated transcranial magnetic stimulation (nTMS) to assess how this surgery impacts neurophysiology and clinical recovery.
  • We conducted a study with 15 patients, measuring nTMS neurophysiological indexes and clinical scores before surgery and then at 6 and 12 months post-surgery, finding significant improvements in motor function and neurophysiological metrics.
  • Results indicated that surgical decompression enhances neurophysiological function in the spinal cord and cortex, leading to meaningful recovery, supporting the idea that the brain and spinal cord can undergo functional changes and plasticity.

Article Abstract

(1) Background: Degenerative cervical myelopathy is one of the main causes of disability in the elderly. The treatment of choice in patients with clear symptomatology and radiological correlation is surgical decompression. The application of navigated transcranial magnetic stimulation (nTMS) techniques has the potential to provide additional insights into the cortical and corticospinal behavior of the myelopathic cord and to better characterize the possible extent of clinical recovery. The objective of our study was to use nTMS to evaluate the effect of surgical decompression on neurophysiological properties at the cortical and corticospinal level and to better characterize the extent of possible clinical recovery. (2) Methods: We conducted a longitudinal study in which we assessed and compared nTMS neurophysiological indexes and clinical parameters (modified Japanese Orthopedic Association score and nine-hole pegboard test) before surgery, at 6 months, and at 12 months' follow-up in a population of 15 patients. (3) Results: We found a significant reduction in resting motor threshold (RMT; average 7%), cortical silent period (CSP; average 15%), and motor area (average 25%) at both 6 months and 12 months. A statistically significant linear correlation emerged between recruitment curve (RC) values obtained at follow-up appointments and at baseline (r = 0.95 at 6 months, r = 0.98 at 12 months). A concomitant improvement in the mJOA score and in the nine-hole pegboard task was observed after surgery. (4) Conclusions: Our results suggest that surgical decompression of the myelopathic spinal cord improves the neurophysiological balance at the cortical and corticospinal level, resulting in clinically significant recovery. Such findings contribute to the existing evidence characterizing the brain and the spinal cord as a dynamic system capable of functional and reversible plasticity and provide useful clinical insights to be used for patient counseling.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10887348PMC
http://dx.doi.org/10.3390/brainsci14020124DOI Listing

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