Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging.

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Abstract Text:

Ryutaro Fujii,Hironobu Sakaura,Yoshihiro Mukai,Noboru Hosono,Takahiro Ishii,Motoki Iwasaki,Hideki Yoshikawa,Kazuomi Sugamoto,Ryutaro Fujii,Hironobu Sakaura,Yoshihiro Mukai,Noboru Hosono,Takahiro Ishii,Motoki Iwasaki,Hideki Yoshikawa,Kazuomi Sugamoto,Ryutaro Fujii,Hironobu Sakaura,Yoshihiro Mukai,Noboru Hosono,Takahiro Ishii,Motoki Iwasaki,Hideki Yoshikawa,Kazuomi Sugamoto,

In vivo three-dimensional (3D) kinematics of the lumbar spine has not been well evaluated by the conventional methods because of their methodological limitations, while 3D intervertebral motions have been quantitatively determined by cadaver studies. We thus developed a novel 3D analyzing system for the relative motions of individual vertebrae using 3D magnetic resonance imaging (MRI) and analyzed in vivo 3D intervertebral motions of the lumbar spine during trunk rotation. Ten healthy volunteers underwent 3D MRI of the lumbar spine in nine positions with 15 degrees increments during trunk rotation (0 degrees , 15 degrees , 30 degrees , 45 degrees , and maximum). Relative motions of the lumbar spine were calculated by automatically superimposing a segmented 3D MRI of the vertebra in the neutral position over images of each position using the voxel-based registration method. These 3D motions were represented with 6 degrees of freedom by Euler angles and translations on the coordinate system. The mean axial rotation of ten healthy volunteers of each lumbar spinal segment in 45 degrees trunk rotation to each side ranged from 1.2 degrees to 1.7 degrees . Coupled flexion with axial rotation was observed at the segments from L1/2 to L5/S1. Coupled lateral bending of the segments from L1/2 to L4/5 was in the opposite direction of the trunk rotation, while that of T12/L1 and L5/S1 was in the same direction. The direction of the coupled lateral bending in the present study was different from that in the previous cadaver study only at L4/5. This difference might result from the non-load state of the supine position in the current study and/or the non-physiological state in the cadaver study. Our system has two limitations: (1) the study was conducted with each volunteer in the supine position, and (2) because the rotation device regulated trunk rotation, trunk rotation might not have been physiological. In vivo 3D intervertebral motions of the lumbar spine during trunk rotation were evaluated using our novel motion analysis system. These data may be useful for the optimal orthopaedic management of lumbar spinal disorders.

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Publishing Authors By Initials

R Fujii,H Sakaura,Y Mukai,N Hosono,T Ishii,M Iwasaki,H Yoshikawa,K Sugamoto,R Fujii,H Sakaura,Y Mukai,N Hosono,T Ishii,M Iwasaki,H Yoshikawa,K Sugamoto,R Fujii,H Sakaura,Y Mukai,N Hosono,T Ishii,M Iwasaki,H Yoshikawa,K Sugamoto,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: European spine journal : official publication of t

VOLUME: 16

Page Numbers: 1867-74

Journal Abbreviation:

ISSN: 0940-6719

DAY: 5

MONTH: 06

YEAR: 2007

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9301980

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging.

AFFILIATION: Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Japan, fujii-teddy@rio.odn.ne.jp.

Country: Germany

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Eur Spine J

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging Related Publications

• Assessment of the "functional length" of the three bundles of the anterior cruciate ligament.
• In vivo kinematic analysis of a high-flexion posterior stabilized fixed-bearing knee prosthesis in deep knee-bending motion.
• Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging.
• Radiological study of joint destruction patterns in rheumatoid flatfoot.