Effects of distraction on physiologic integrity of the spinal cord, spinal cord blood flow, and clinical status

Masatoshi Naito, Jeffrey H. Owen, Keith H. Bridwell, Yoichi Sugioka

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The authors determined the effects of distraction of the spine on physiologic integrity of the spinal cord using neurogenic motor evoked potentials (NMEPs), somatosensory evoked potentials (SEPs), spinal cord blood flow measurements, and clinical status in nine hogs. Spinal cord blood flow was measured after each level of distraction using the hydrogen washout technique. The results indicated that blood flow of at least 65% of baseline was required to maintain physiologic integrity of the spinal cord, and that a decrease of blood flow to 12% of baseline was associated with paraplegia. Neurogenic motor evoked potentials always correlated with the animal's postsurgical clinical status, whereas the SEP was falsely negative in one animal.

Original languageEnglish
Pages (from-to)1154-1158
Number of pages5
JournalSpine
Volume17
Issue number10
DOIs
StatePublished - Oct 1992

Keywords

  • Cord blood flow
  • Cord integrity
  • Motor evoked potentials
  • Paraplegia
  • Sensory evoked potentials
  • Spinal distraction

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