{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T19:45:29Z","timestamp":1777923929002,"version":"3.51.4"},"reference-count":70,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T00:00:00Z","timestamp":1774396800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Neurotrauma"],"abstract":"<jats:p>\n                    Spinal cord injury (SCI) causes muscle weakness or paralysis, with functional deficits partly due to motor neuron damage near or below the injury level. Understanding how damage affects the morphology and function of motor neurons and the muscle fibers they innervate (i.e., motor units [MUs]) is important for characterizing motor pathophysiology. We assessed MU electrophysiological properties in muscles innervated near the injury zone (anconeus: C7; extensor indicis [EI]: C8\u2013T1) in motor-incomplete cervical SCI and controls. The EI of 14 SCI participants (48.2 \u00b1 14.6 years; 1 female; C2:1, C4:5, C5:6, C6:2) were compared with 14 controls (44.4 \u00b1 15.9 years; 2 females), and the anconeus was sampled from 9 participants per group (SCI: 52.0 \u00b1 15.8 years, 1 female; controls: 47.3 \u00b1 17.4 years, 1 female). Participants completed multiple, 15-s low-intensity elbow (anconeus) and finger (EI) extensions to study MU potentials (MUPs) recorded using monopolar needle and surface electromyography (EMG). Automated signal-decomposition software provided quantitative data from needle-detected MUPs, surface-detected MUPs (S-MUPs), and near-fiber MUPs (NFMs). The anconeus had fewer MUP phases and turns (\u226511%) in SCI than controls (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    &lt; 0.05), but MUP, S-MUP, and NFM parameters were not different (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    \u2265 0.11). Conversely, multiple EI MUP, S-MUP, and NFM parameters were larger (\u226523%) for SCI than controls (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    &lt; 0.05). Interestingly, the more caudally innervated EI demonstrated MU adaptations indicative of chronic denervation, while the more rostrally innervated anconeus did not. Thus, our findings indicate that MUs located in spinal segments farther from the injury may be more susceptible to transsynaptic degeneration than MUs located closer to the injury site.\n                  <\/jats:p>","DOI":"10.1177\/08977151261434223","type":"journal-article","created":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T05:39:32Z","timestamp":1774503572000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Examining Motor Unit Properties of Upper Limb Muscles Near the Zone of Injury in Chronic Cervical Spinal Cord Injury"],"prefix":"10.1177","author":[{"given":"Mathew I.B.","family":"Debenham","sequence":"first","affiliation":[{"name":"International Collaboration on Repair Discoveries (ICORD), Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."},{"name":"Experimental Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."},{"name":"Division of Physical Medicine &amp; Rehabilitation, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emmanuel","family":"Ogalo","sequence":"additional","affiliation":[{"name":"International Collaboration on Repair Discoveries (ICORD), Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."},{"name":"Experimental Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."},{"name":"Division of Physical Medicine &amp; Rehabilitation, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harvey","family":"Wu","sequence":"additional","affiliation":[{"name":"International Collaboration on Repair Discoveries (ICORD), Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."},{"name":"Experimental Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada."},{"name":"Division of Physical Medicine &amp; 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