共 29 条
Electrophysiologic Evidence of Spinal Accessory Neuropathy in Patients With Cervical Myofascial Pain Syndrome
被引:18
作者:
Chang, Chein-Wei
[1
]
Chang, Kai-Yin
[2
]
Chen, Yu-Ren
[3
]
Kuo, Po-Ling
[3
,4
]
机构:
[1] Natl Taiwan Univ, Dept Phys Med & Rehabil, Coll Med & Hosp, Taipei 100, Taiwan
[2] Natl Chiao Tung Univ, Inst Informat Management, Hsinchu, Taiwan
[3] Natl Taiwan Univ Hosp, Dept Phys Med & Rehabil, Taipei, Taiwan
[4] Natl Taiwan Univ, Dept Elect Engn, Taipei 100, Taiwan
来源:
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
|
2011年
/
92卷
/
06期
关键词:
Accessory nerve;
Electromyography;
Electrophysiology;
Myofascial pain syndromes;
Rehabilitation;
TRIGGER POINTS;
NERVE;
MOTOR;
DEGENERATION;
POTENTIALS;
MECHANISMS;
D O I:
10.1016/j.apmr.2011.01.010
中图分类号:
R49 [康复医学];
学科分类号:
100215 ;
摘要:
Chang C-W, Chang K-Y, Chen Y-R, Kuo P-L. Electrophysiologic evidence of spinal accessory neuropathy in patients with cervical myofascial pain syndrome. Arch Phys Med Rehabil 2011;92:935-40. Objective: To evaluate whether or not spinal accessory neuropathy exists in patients with cervical myofascial pain syndrome (MFPS). Design: Prospective study. Setting: A neurophysiologic laboratory in a university hospital. Participants: Patients with cervical MFPS (n=25) and healthy controls (n=20). Interventions: Not applicable. Main Outcome Measures: We performed nerve conduction studies (NCSs) in bilateral spinal accessory nerves, and electromyography and stimulated single-fiber electromyography in the trapezius muscles of all patients and controls. Parameters including nerve conduction velocities (NCVs), amplitudes and areas of compound muscle action potentials (CMAPs), and mean consecutive differences (MCDs) in single-fiber electromyography were measured, analyzed, and compared with the disease durations of the patients. Results: Spinal accessory NCSs showed normative NCVs but with prominently reduced CMAP amplitude in the patients with cervical MFPS, which is recognized as an axonal neuropathy of the spinal accessory nerves. Electromyography showed prominent evidence of denervation and reinnervation patterns in 48% of the MFPS patients. The abnormal MCDs in single-fiber electromyography indicated a synaptic delay of motor endplates in the motor units, and may signify evolving instability of neuromuscular transmission in the spinal accessory nerves innervating trapezius muscles of the patients. Conclusions: This study demonstrates electrophysiologic evidence of neuroaxonal degeneration and neuromuscular transmission disorder in a significant proportion of patients with cervical MFPS. We suggest that spinal accessory neuropathy may be associated with cervical MFPS.
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页码:935 / 940
页数:6
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