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Highlighting of intervertebral movements and variations of intradiskal pressure during lumbar spine manipulation: A feasibility study

Journal: Journal of Osteopathic Medicine Date: 2001/04, 4(1):Pages: 34-35. doi: Subito , type of study: explorative study

Full text    (https://www.sciencedirect.com/science/article/pii/S1443846101800575)

Keywords:

explorative study [19]
intradiscal pressure [2]
lumbar spine manipulation [1]
abstract [165]

Abstract:

Objectives: To demonstrate relative movement of the vertebrae and variations in intradiskal pressure during 2 different lumbar spinal manipulations, in flexion or extension, in 2 unembalmed cadavers. Design: A pressure sensor was inserted into the L3-4 disk in cadaver 1 and into the L1-2 to L4-5 disks in cadaver 2. Two adjacent vertebrae (L3 and L4 in cadaver 1, and L4 and L5 in cadaver 2) were each equipped with 2 monoaxial accelerometers to record acceleration in the caudocranial axis and a biaxial accelerometer to record acceleration in the “horizontal“ anatomic plane. Setting: Laboratory study. Results: During the thrust, relative intervertebral movements were demonstrated; movements differed with the type of manipulation (in flexion or extension). Intradiskal pressure initially increased, then decreased. Conclusions: Lumbar spinal manipulations have a biomechanical effect on the intervertebral disks, producing a brief but marked change in intradiskal pressure. This effect, which differs slightly with the different types of manipulation studied, is the consequence of movements of the adjacent vertebrae.


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