1978 Volume 27 Issue 3 Pages 343-347
Mechanism of arm pain syndrome at handwork is as follows.
Overwork at handwork (ultimate cause) brings on overstrain of M. levator scapula. Overstrain of M. levator scapula (working cause) brings on subluxation of cervical spine.
Subluxation of cervical spine (local cause) brings on overstrain of M. scalenus medius, M. scalenus anterior and etc.
For example, overstrain of M. scalenus medius brings on pain and numbness of arm in radial nerve area.
Overstrain of M. scalenus (local cause) brings on pain and numbness of arm (result).
Analysis on disorder of neck, shoulder and arm was carried out in 103 cases.
Enforcement of adjustment of cervical spine was carried out in 68%, including that relation subjunctive symptom and spinal column was obvious.
These facts of subluxation of cervical spine were proved by computer tomography.
Mechanism of arm pain syndrome in accidental disorder of neck is explained by external force without overstrain of M. levator scapula.