Identification of spinal tissues loaded by manual therapy: a robot-based serial dissection technique applied in porcine motion segments
Language: 
English
Short Title: 
Identification of spinal tissues loaded by manual therapy
Abstract: 

STUDY DESIGN: Serial dissection of porcine motion segments during robotic control of vertebral kinematics. OBJECTIVE: To identify which spinal tissues are loaded in response to manual therapy (manipulation and mobilization) and to what magnitude. SUMMARY OF BACKGROUND DATA: Various theoretical constructs attempt to explain how manual therapies load specific spinal tissues. By using a parallel robot to control vertebral kinematics during serial dissection, it is possible to quantify the loads experienced by discrete spinal tissues undergoing common therapeutic procedures such as manual therapy. METHODS: In 9 porcine cadavers, manual therapy was provided to L3 and the kinematic response of L3-L4 recorded. The exact kinematic trajectory experienced by L3-L4 in response to manual therapy was then replayed to the isolated segment by a parallel robot equipped with a 6-axis load cell. Discrete spinal tissues were then removed and the kinematic pathway replayed. The change in forces and moments following tissue removal were considered to be those applied to that specific tissue by manual therapy. RESULTS: In this study, both manual therapies affected spinal tissues. The intervertebral disc experienced the greatest forces and moments arising from both manipulation and mobilization. CONCLUSION: This study is the first to identify which tissues are loaded in response to manual therapy. The observation that manual therapy loads some tissues to a much greater magnitude than others offers a possible explanation for its modest treatment effect; only conditions involving these tissues may be influenced by manual therapy. Future studies are planned to determine if manual therapy can be altered to target (or avoid) specific spinal tissues.

Author(s): 
Kawchuk, Gregory N.
Carrasco, Alejandro
Beecher, Grayson
Goertzen, Darrell
Prasad, Narasimha
Item Type: 
Journal Article
Publication Title: 
Spine
Journal Abbreviation: 
Spine
Publication Date: 
Oct 15, 2010
Publication Year: 
2010
Pages: 
1983-1990
Volume: 
35
Issue: 
22
ISSN: 
1528-1159
DOI: 
10.1097/BRS.0b013e3181ddd0a3
Library Catalog: 
NCBI Published Medical (?)
Extra: 
PMID: 20881661 PMCID: PMC2958225

Turabian/Chicago Citation

Gregory N. Kawchuk, Alejandro Carrasco, Grayson Beecher, Darrell Goertzen and Narasimha Prasad. Oct 15, 2010. "Identification of spinal tissues loaded by manual therapy: a robot-based serial dissection technique applied in porcine motion segments." Spine 35: 22: 1983-1990. 10.1097/BRS.0b013e3181ddd0a3.

Wikipedia Citation

<ref> {{Cite journal | doi = 10.1097/BRS.0b013e3181ddd0a3 | issn = 1528-1159 | volume = 35 | pages = 1983-1990 | last = Kawchuk | first = Gregory N. | coauthors = Carrasco, Alejandro, Beecher, Grayson, Goertzen, Darrell, Prasad, Narasimha | title = Identification of spinal tissues loaded by manual therapy: a robot-based serial dissection technique applied in porcine motion segments | journal = Spine | date = Oct 15, 2010 | pmid = | pmc = }} </ref>