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Electrophysiological studies in cervical spondylosis
M R Khan1, A McInnes, S P Hughes
1Department of Orthopaedic Surgery, Princess Margaret Rose Orthopaedic Hospital, Fairmilehead, Edinburgh.
Journal of Spinal Disorders
|September 1, 1989
Summary
Nerve conduction velocity (NCV), cervical somatosensory evoked potentials (CSEP), and electromyography (EMG) aid in diagnosing cervical spondylosis. These electrophysiological tests help differentiate nerve root lesions from peripheral entrapment neuropathy.
Area of Science:
- Neurology
- Clinical Electrophysiology
Background:
- Cervical spondylosis is a degenerative condition affecting the cervical spine.
- Accurate diagnosis is crucial for effective patient management and treatment planning.
Purpose of the Study:
- To evaluate the diagnostic utility of NCV, CSEP, and EMG in patients with cervical spondylosis.
- To assess the ability of these electrophysiological tests to differentiate nerve root involvement from peripheral neuropathy.
Main Methods:
- A study involving 57 patients diagnosed with cervical spondylosis.
- Utilized nerve conduction velocity (NCV), cervical somatosensory evoked potentials (CSEP), and concentric needle electromyography (EMG).
- Patients were analyzed in two groups based on the presence or absence of clear neurological signs.
Main Results:
- Abnormal electrophysiological recordings were found in 9 of 24 patients without clear neurological signs (Group I).
- Abnormal recordings were present in 22 of 33 patients with clinical signs (Group II).
- CSEP showed abnormalities in 12 of 14 patients with myelographic evidence of nerve root filling defects.
Conclusions:
- NCV, CSEP, and EMG are valuable tools for distinguishing cervical nerve root lesions from peripheral entrapment neuropathies.
- While not precise for localizing the exact level, these tests serve as effective screening methods before myelography or CT scanning for surgical consideration.