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Axial Rotation of the Lumbar Spine and the Effect of FlexionAnin Vitroandin VivoBiomechanical Study

 

作者: R GUNZBURG,   W HUTTON,   R FRASER,  

 

期刊: Spine  (OVID Available online 1991)
卷期: Volume 16, issue 1  

页码: 22-28

 

ISSN:0362-2436

 

年代: 1991

 

出版商: OVID

 

关键词: lumbar spine;in vivoaxial rotation;in vitromeasurements

 

数据来源: OVID

 

摘要:

A series of experiments were performed on eight whole, cadaveric lumbar spines and on eight male volunteers to determine whether axial rotation changed with subjects bending forward compared with being in a neutral posture and whether rotation was affected by articular tropism. Kirschner wires were inserted into the spinous processes of the eight cadaveric lumbar spines, and the axial rotation of the wires was measured while the spine was rotated in a torsion apparatus. Similarly, Steinmann pins were inserted into the spinous processes of L3, L4, and L5 of the eight volunteers, and the axial rotation of the pins was measured while the subjects rotated in a torsion apparatus. Axial rotation was found to be less when combined with forward flexion, and articular tropism did not influence the amplitude of rotation.

 

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