Electrophysiologic Evidence of Spinal Accessory Neuropathy in Patients With Cervical Myofascial Pain Syndrome Chein-Wei Chang, MD, Kai-Yin Chang, MS, Yu-Ren Chen, MD, Po-Ling Kuo, MD, PhD Archives of Physical Medicine and Rehabilitation Volume 92, Issue 6, Pages 935-940 (June 2011) DOI: 10.1016/j.apmr.2011.01.010 Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions
Fig 1 Landmarks of placing electrodes for the SAN conduction study. (A) Left anterior-lateral view for the neck. (B) Posterior view for the neck and upper back. Abbreviations: G, ground electrode; RaL, active electrode for lower trapezius recording; RaM, active electrode for middle trapezius recording; RaU, active electrode for upper trapezius recording; RrL, reference electrode for lower trapezius recording; RrM, reference electrode for middle trapezius recording; RrU, reference electrode for upper trapezius recording; SaD, active electrode for distal stimulation; SaP, active electrode for proximal stimulation; SrD, reference electrode for distal stimulation; SrP, reference electrode for proximal stimulation. Archives of Physical Medicine and Rehabilitation 2011 92, 935-940DOI: (10.1016/j.apmr.2011.01.010) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions
Fig 2 Relation between CMAP amplitude and disease duration in patients with cervical MFPS. Archives of Physical Medicine and Rehabilitation 2011 92, 935-940DOI: (10.1016/j.apmr.2011.01.010) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions
Fig 3 Relation between MCD and disease duration in patients with cervical MFPS. Archives of Physical Medicine and Rehabilitation 2011 92, 935-940DOI: (10.1016/j.apmr.2011.01.010) Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions