Biomechanical Studies of the Safety of the Atlanto-odontoid Joint During Massage Therapy with Oblique-pulling Manipulation of the Cervical Spine on Cadaver Specimens
10.3969/j.issn.1003-0034.2001.04.010
- VernacularTitle:寰齿关节在颈椎斜扳手法中安全性问题的力学研究
- Author:
Zhi-Quan WANG
1
;
Juan-Tao YAN
;
Guo-Quan SHEN
Author Information
1. The Shanghai Luwan South-East Hospital
- From:
China Journal of Orthopaedics and Traumatology
2001;14(4):217-218
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the safety over the atlanto-odontoid joint of the cervical spine during oblique-pulling manipulation.Methods The contact stress of the atlanto-odontoid joint in physiologic unstable conditions with and without pulling-and-extending of seven cadaveric specimans of cervical spine were observed with a biomechanical electric measuring apparatus and oblique-pulling device.Results The ratio of contact stress in pulling-and-extending condition,physiologic condition and pathologic condition is 1∶1.2∶9.4.Under normal physiologic condition,the stress in posterior extension is greater than that in anterior flexion,but less than in neutral position.Conclusion A better option of the manipulation position is to put the patient′s head at a slight flexion when a certain pulling-extending force is applied.In patient with severe degenerative changes of the cervical spine and unstability,the amplitude of rotation and the force of manipulation should be decreased.
