Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model
Current knowledge regarding biomechanical in vivo deep tissue measures related to spinal manipulation remain somewhat limited. More in vivo animal studies are needed to better understand the effects viscoelastic tissue properties (i.e., dampening) have on applied spinal manipulation forces. This new...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Biology |
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| Online Access: | https://www.mdpi.com/2079-7737/12/1/62 |
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| author | William R. Reed Carla R. Lima Michael A. K. Liebschner Christopher P. Hurt Peng Li Maruti R. Gudavalli |
| author_facet | William R. Reed Carla R. Lima Michael A. K. Liebschner Christopher P. Hurt Peng Li Maruti R. Gudavalli |
| author_sort | William R. Reed |
| collection | DOAJ |
| description | Current knowledge regarding biomechanical in vivo deep tissue measures related to spinal manipulation remain somewhat limited. More in vivo animal studies are needed to better understand the effects viscoelastic tissue properties (i.e., dampening) have on applied spinal manipulation forces. This new knowledge may eventually help to determine whether positive clinical outcomes are associated with particular force thresholds reaching superficial and/or deep spinal tissues. A computer-controlled feedback motor and a modified Activator V device with a dynamic load cell attached were used to deliver thrust spinal manipulations at various magnitudes to the L7 spinous process in deeply anesthetized animals. Miniature pressure catheters (Millar SPR-1000) were inserted unilaterally into superficial and deep multifidi muscles. Measurements of applied mechanical forces and superficial/deep multifidi intramuscular pressure changes were recorded during spinal manipulations delivered in vivo. Manipulative forces and net changes in intramuscular pressures reaching deep spinal tissues are greatly diminished by viscoelastic properties of in vivo tissues, which could have possible clinical safety and/or mechanistic implications. |
| first_indexed | 2024-03-09T13:32:00Z |
| format | Article |
| id | doaj.art-464c1568c58b4783b0fa9e94aa61897e |
| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-09T13:32:00Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biology |
| spelling | doaj.art-464c1568c58b4783b0fa9e94aa61897e2023-11-30T21:16:49ZengMDPI AGBiology2079-77372022-12-011216210.3390/biology12010062Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal ModelWilliam R. Reed0Carla R. Lima1Michael A. K. Liebschner2Christopher P. Hurt3Peng Li4Maruti R. Gudavalli5Department of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL 35294, USARehabilitation Sciences Program, University of Alabama at Birmingham, Birmingham, AL 35294, USADepartment of Medicine, Baylor College of Medicine, Houston, TX 77030, USADepartment of Physical Therapy, University of Alabama at Birmingham, Birmingham, AL 35294, USASchool of Nursing, University of Alabama at Birmingham, Birmingham, AL 35294, USACollege of Chiropractic Medicine, Keiser University, West Palm Beach, FL 33411, USACurrent knowledge regarding biomechanical in vivo deep tissue measures related to spinal manipulation remain somewhat limited. More in vivo animal studies are needed to better understand the effects viscoelastic tissue properties (i.e., dampening) have on applied spinal manipulation forces. This new knowledge may eventually help to determine whether positive clinical outcomes are associated with particular force thresholds reaching superficial and/or deep spinal tissues. A computer-controlled feedback motor and a modified Activator V device with a dynamic load cell attached were used to deliver thrust spinal manipulations at various magnitudes to the L7 spinous process in deeply anesthetized animals. Miniature pressure catheters (Millar SPR-1000) were inserted unilaterally into superficial and deep multifidi muscles. Measurements of applied mechanical forces and superficial/deep multifidi intramuscular pressure changes were recorded during spinal manipulations delivered in vivo. Manipulative forces and net changes in intramuscular pressures reaching deep spinal tissues are greatly diminished by viscoelastic properties of in vivo tissues, which could have possible clinical safety and/or mechanistic implications.https://www.mdpi.com/2079-7737/12/1/62spinal manipulationintramuscularviscoelasticitybiomechanicsforcemultifidus |
| spellingShingle | William R. Reed Carla R. Lima Michael A. K. Liebschner Christopher P. Hurt Peng Li Maruti R. Gudavalli Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model Biology spinal manipulation intramuscular viscoelasticity biomechanics force multifidus |
| title | Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model |
| title_full | Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model |
| title_fullStr | Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model |
| title_full_unstemmed | Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model |
| title_short | Measurement of Force and Intramuscular Pressure Changes Related to Thrust Spinal Manipulation in an In Vivo Animal Model |
| title_sort | measurement of force and intramuscular pressure changes related to thrust spinal manipulation in an in vivo animal model |
| topic | spinal manipulation intramuscular viscoelasticity biomechanics force multifidus |
| url | https://www.mdpi.com/2079-7737/12/1/62 |
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