Hello and welcome to this week’s edition of HealthBeat, Chiropractic OnLine Today’s Health, News and Informational Podcast.
In this week’s news: We’ll Be Looking At –
- Spinal Cord Movement during Straight Leg Raise Test
- And Finally a Story about Entrapment of the Middle Cluneal Nerve
For HealthBeat …. This is Dr. Todd Eglow!
Welcome to HealthBeat Podcast #601 recorded August 04, 2017.
HealthBeat is Chiropractic OnLine Today’s radio program, providing current news and commentary about Chiropractic and Health.
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And Now for some news ….
Spinal Cord Movement during Straight Leg Raise Test
The objective of a recent study published in the journal Spine, was to explore whether impairment of neural excursion during the straight leg raise test occurs in patients with sciatic symptoms secondary to lumbar intervertebral disc herniation (LIDH).
Earlier studies have shown that during the straight leg raise (SLR) test in asymptomatic volunteers tensile forces are consistently transmitted throughout the neural system and the thoracolumbar spinal cord slides distally.
The results showed that there was 66.6% less excursion of conus medullaris with straight leg raise performed on the symptomatic side compared with excursions measured with straight leg raise performed on the asymptomatic side.
The study concluded that in patients with lumbar intervertebral disc herniation, the neural displacement on the symptomatic side is significantly reduced by the compressing IVD herniation.
According to the authors of the study, these are the first data in intact human subjects to support the limitation of neural movements in the vertebral canal with lumbar intervertebral disc herniation.
Surf to our Show Notes for Links – http://journals.lww.com/spinejournal/Fulltext/2017/08010/Reduced_Spinal_Cord_Movement_With_the_Straight_Leg.3.aspx
Entrapment of the Middle Cluneal Nerve
Entrapment of the middle cluneal nerve (MCN) under the long posterior sacroiliac ligament (LPSL) is a possible, and under diagnosed, cause of low-back and/or leg symptoms.
To date, detailed anatomical studies of MCN entrapment are few. The purpose of a recent study published in the Journal of Pain Research was study was to ascertain, using cadavers, the relationship between the MCN and LPSL and to investigate MCN entrapment.
A total of 30 hemipelves from 20 cadaveric donors (15 female, 5 male) designated for education or research, were studied by gross anatomical dissection.
The age range of the donors at death was 71–101 years with a mean of 88 years.
Branches of the MCN were identified under or over the gluteus maximus fascia caudal to the posterior superior iliac spine (PSIS) and traced laterally as far as their finest ramification.
The study concluded that this is the first anatomical study illustrating MCN entrapment. It is likely that MCN entrapment is not a rare clinical entity.
Surf to our Show Notes for Links – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476578/pdf/jpr-10-1431.pdf
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For Chiropractic OnLine Today’s HealthBeat, This has been
Dr. Todd Eglow.