File Download

There are no files associated with this item.

Supplementary

Conference Paper: In vitro kinematics study of human lumbar facet joints

TitleIn vitro kinematics study of human lumbar facet joints
Authors
Issue Date2009
Citation
The 6th SICOT/SIROT Annual International Conference, combined meeting with the Royal College of Orthopaedic Surgeons of Thailand (RCOST), Pattaya, Thailand, 29 October-1 November 2009. How to Cite?
AbstractBACKGROUND: Facet joints are important in accommodating spinal motion and maintaining spinal integrity. It is believed that the anatomy and biomechanical behavior of the joints vary along the lumbar spine. The objective of current study is to develop an experimental method for tracking the in vitro facet joint motions with a motion analysis system. METHODS: Biomechanical tests were conducted on a human cadaveric lumbar spine specimen to study the facet joint kinematics. Pure moment of ±7.5Nm was applied by MTS spine loading fixture to simulate the principal spinal motions. By using a commercial motion analysis system, the three-dimensional rotations and displacements of the facet joints at L3-L4 and L4-L5 levels were measured and calculated. RESULTS: Under flexionextension, the L3-L4 and L4-L5 facet joint rotations and displacements had maximum values of 1.47º and 3.78º, and 0.88 mm and 1.27 mm, respectively. It was found that the two sides showed similar values in both parameters. Similar results in the motion pattern were obtained for lateral bending. However, under axial rotation, there was an asymmetric behavior in the facet joint motions between right and left sides at the two levels, showing larger rotations on the right facets. DISCUSSIONS: This pilot study demonstrates the in vitro kinematics study of the lumbar facet joints and further investigation will be conducted with larger sample size. To study the relationship between the joint bio mechanics and anatomical structures, facet joint orientation and geometry are to be correlated with the motion data at different spinal levels.
DescriptionOral Presentations: Session: Spine. Abstract no. 21855 - http://www.sicot.org/resources/File/Pattaya/abstract%20cdrom_oral.pdf
Persistent Identifierhttp://hdl.handle.net/10722/126525

 

DC FieldValueLanguage
dc.contributor.authorLu, Wen_HK
dc.contributor.authorTang, WKen_HK
dc.contributor.authorYeung, Ken_HK
dc.contributor.authorLuk, KDKen_HK
dc.date.accessioned2010-10-31T12:33:42Z-
dc.date.available2010-10-31T12:33:42Z-
dc.date.issued2009en_HK
dc.identifier.citationThe 6th SICOT/SIROT Annual International Conference, combined meeting with the Royal College of Orthopaedic Surgeons of Thailand (RCOST), Pattaya, Thailand, 29 October-1 November 2009.en_HK
dc.identifier.urihttp://hdl.handle.net/10722/126525-
dc.descriptionOral Presentations: Session: Spine. Abstract no. 21855 - http://www.sicot.org/resources/File/Pattaya/abstract%20cdrom_oral.pdf-
dc.description.abstractBACKGROUND: Facet joints are important in accommodating spinal motion and maintaining spinal integrity. It is believed that the anatomy and biomechanical behavior of the joints vary along the lumbar spine. The objective of current study is to develop an experimental method for tracking the in vitro facet joint motions with a motion analysis system. METHODS: Biomechanical tests were conducted on a human cadaveric lumbar spine specimen to study the facet joint kinematics. Pure moment of ±7.5Nm was applied by MTS spine loading fixture to simulate the principal spinal motions. By using a commercial motion analysis system, the three-dimensional rotations and displacements of the facet joints at L3-L4 and L4-L5 levels were measured and calculated. RESULTS: Under flexionextension, the L3-L4 and L4-L5 facet joint rotations and displacements had maximum values of 1.47º and 3.78º, and 0.88 mm and 1.27 mm, respectively. It was found that the two sides showed similar values in both parameters. Similar results in the motion pattern were obtained for lateral bending. However, under axial rotation, there was an asymmetric behavior in the facet joint motions between right and left sides at the two levels, showing larger rotations on the right facets. DISCUSSIONS: This pilot study demonstrates the in vitro kinematics study of the lumbar facet joints and further investigation will be conducted with larger sample size. To study the relationship between the joint bio mechanics and anatomical structures, facet joint orientation and geometry are to be correlated with the motion data at different spinal levels.-
dc.languageengen_HK
dc.relation.ispartofCombined SICOT/RCOST Annual Meeting-
dc.titleIn vitro kinematics study of human lumbar facet jointsen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLu, W: wwlu@hkusua.hku.hken_HK
dc.identifier.emailTang, WK: edmundtwk@yahoo.comen_HK
dc.identifier.emailYeung, K: wkkyeung@hkucc.hku.hken_HK
dc.identifier.emailLuk, KDK: hrmoldk@hkucc.hku.hken_HK
dc.identifier.authorityLu, W=rp00411en_HK
dc.identifier.authorityYeung, K=rp00309en_HK
dc.identifier.authorityLuk, KDK=rp00333en_HK
dc.identifier.hkuros180229en_HK
dc.description.otherThe 6th SICOT/SIROT Annual International Conference, combined meeting with the Royal College of Orthopaedic Surgeons of Thailand (RCOST), Pattaya, Thailand, 29 October-1 November 2009.-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats