[Three-dimensional anatomical position of rotatory center in cervical rotatory and local manipulation].
OBJECTIVE
To investigate the three-dimensional anatomical position of the rotatory center in cervical rotatory and local manipulation.


METHODS
A three-dimensional model was constructed based on CT data from cadaveric specimens of axial spinous process deviation. Cervical rotation was simulated on this model, and the graphic outcome was analyzed.


RESULTS
The rotatory center of this model was at the dens axis, not at the apex of the axial spionus process, and the angle of rotation exceeded observable angle.


CONCLUSIONS
The new concept of anisotropic rotation of the cervical vertebrae should be established and its principles must be comprehended in clinical practice of cervical rotatory manipulation.
Wan
Lei
L
Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China. yeswangz@126.com
Chen
Jing
J
Li
Yi-kai
YK
D000328:Adult; D002102:Cadaver; D002574:Cervical Vertebrae / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D020393:Manipulation, Spinal / Q000379:methods*; D016059:Range of Motion, Articular; D012399:Rotation; D014057:Tomography, X-Ray Computed