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Obstetrical lumbosacral plexus injury.

T E Feasby1, S R Burton, A F Hahn

  • 1Department of Clinical Neurological Sciences, University of Western Ontario, Victoria Hospital, London, Canada.

Muscle & Nerve
|August 1, 1992
PubMed
Summary
This summary is machine-generated.

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Obstetrical paralysis affecting the lumbosacral trunk (L4-5) and S-1 root can occur during childbirth. Electrophysiologic testing confirms this nerve injury, often linked to difficult labor.

Area of Science:

  • Neurology
  • Obstetrics
  • Nerve Injury

Background:

  • Injuries to the lumbosacral plexus during labor and delivery are documented but lack specific electrophysiologic evidence.
  • Previous literature has not precisely localized the site of nerve damage in obstetrical paralysis.

Observation:

  • This study presents two cases of obstetrical paralysis.
  • Comprehensive electrophysiologic testing was performed on both cases.

Findings:

  • Electrophysiologic testing precisely localized the nerve injury to the lumbosacral trunk (L4-5) and S-1 root.
  • The identified site of injury is where these nerves converge and traverse the pelvic rim.

Implications:

  • This finding provides electrophysiologic substantiation for the location of obstetrical nerve injuries.

Related Experiment Videos

  • Risk factors include small maternal size, large fetus, midforceps rotation, and fetal malposition.
  • Understanding the precise location aids in diagnosis and management of postpartum neurological deficits.