Index to Chiropractic Literature
Index to Chiropractic Literature
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ID 15795
  Title Effect of simulating lumbar manipulations on lumbar nucleus pulposus pressures
Journal J Manipulative Physiol Ther. 2002 Jun;25(5):Online access only 4 p.
Peer Review Yes
Publication Type Article
Abstract/Notes Objective: To study the effect of different lumbar manipulations on the pressure of the lumbar nucleus pulposus.

Design: Experimental study.

Setting: Institute of Clinical Anatomy and Biomechanics, the First Military Medical University, Guangzhou, China.

Subjects: Seven fresh cadaveric lumbar spines, from L1 to sacrum.

Interventions: Lumbar spines were loaded on a material test system, whose computer quantitative control simulated 3 manipulations. In state A, the lumbar spines were rotated only; in state B, the lumbar spines were simultaneously rotated and compressed; and in state C, the lumbar spines were simultaneously rotated and tractioned.

Main Outcome Measures: Pressures of the lumbar nucleus pulposus of L3-4, L4-5, L5-S1 were measured with pressure sensors.

Result: Lumbar nuclear pressure for rotation manipulation and compression-rotation manipulation was apparently increased, and the pressures of lumbar nucleus pulposus for traction-rotatory manipulation were reduced or slightly changed.

Conclusions: The results of this preliminary research suggest that rotary manipulation of lumbar spine under traction created the lowest pressures and was theoretically the safest of the 3 procedures.

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