Tags

Type your tag names separated by a space and hit enter

[Role of motor evoked potentials in the diagnosis of myelopathy associated with cervical spondylosis].
Ideggyogy Sz. 2003 Jan 20; 56(1-2):51-7.IS

Abstract

INTRODUCTION

Motor evoked potential (MEP) is the only method that is able to assess the function of the corticospinal tract in various neurological conditions, such as myelopathies. Myelopathy associated with cervical spondylosis, especially at an early stage, has often slight and non-specific clinical signs, pointing to the importance of the electrophysiological assessment of the spinal cord. The authors' aim was to investigate the sensitivity of MEP examination in the detection of myelopathy secondary to cervical spondylosis.

PATIENTS AND METHODS

Patients were classified into three groups according to clinical signs and symptoms: Group I includes patients who have cervical spondylosis as demonstrated by MRI (narrowing of the spinal canal, discal herniation, spinal cord compression) but no complaints or signs suggestive of myelopathy.

RESULTS

In Group II patients had minor, non-specific complaints, such as paraesthesia of the legs and gait disturbance raising the possibility of myelopathy, but neurological examination revealed no pyramidal signs. In Group III patients had pyramidal signs as well. In Group I corticospinal function was normal in all patients, as assessed by MEP examination. In Group II all patients had prolonged central motor conduction time or absent responses to cortical stimulation. Likewise, in Group III MEP revealed abnormal corticospinal function in all patients but one.

CONCLUSIONS

In summary, MEP proved sensitive in the detection of corticospinal dysfunction in myelopathy associated with cervical spondylosis at a stage when clinical signs of pyramidal lesion are not yet present and patients have only minor complaints. On the other hand, if patients are completely symptom free with regard to myelopathy, MEP is also unlikely to disclose corticospinal dysfunction. If pyramidal lesion is evident already by clinical examination, MEP provides no further help. 'False-negative' results are also possible.

Authors+Show Affiliations

Simó M
Semmelweis Egyetem, Altalános Orvostudományi Kar, Neurológiai Klinika, H-1083 Budapest, Balassa u. 6. simomagdi@neur.sote.hu
Arányi Z
No affiliation info available

MeSH

AdultAgedCervical VertebraeDiagnosis, DifferentialEvoked Potentials, MotorFemaleHumansMaleMiddle AgedSpinal Cord DiseasesSpinal Osteophytosis

Pub Type(s)

Case Reports
English Abstract
Journal Article

Language

hun

PubMed ID

12690791

Citation

Simó, Magdolna, and Zsuzsanna Arányi. "[Role of Motor Evoked Potentials in the Diagnosis of Myelopathy Associated With Cervical Spondylosis]." Ideggyogyaszati Szemle, vol. 56, no. 1-2, 2003, pp. 51-7.
Simó M, Arányi Z. [Role of motor evoked potentials in the diagnosis of myelopathy associated with cervical spondylosis]. Ideggyogy Sz. 2003;56(1-2):51-7.
Simó, M., & Arányi, Z. (2003). [Role of motor evoked potentials in the diagnosis of myelopathy associated with cervical spondylosis]. Ideggyogyaszati Szemle, 56(1-2), 51-7.
Simó M, Arányi Z. [Role of Motor Evoked Potentials in the Diagnosis of Myelopathy Associated With Cervical Spondylosis]. Ideggyogy Sz. 2003 Jan 20;56(1-2):51-7. PubMed PMID: 12690791.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Role of motor evoked potentials in the diagnosis of myelopathy associated with cervical spondylosis]. AU - Simó,Magdolna, AU - Arányi,Zsuzsanna, PY - 2003/4/15/pubmed PY - 2003/5/15/medline PY - 2003/4/15/entrez SP - 51 EP - 7 JF - Ideggyogyaszati szemle JO - Ideggyogy Sz VL - 56 IS - 1-2 N2 - INTRODUCTION: Motor evoked potential (MEP) is the only method that is able to assess the function of the corticospinal tract in various neurological conditions, such as myelopathies. Myelopathy associated with cervical spondylosis, especially at an early stage, has often slight and non-specific clinical signs, pointing to the importance of the electrophysiological assessment of the spinal cord. The authors' aim was to investigate the sensitivity of MEP examination in the detection of myelopathy secondary to cervical spondylosis. PATIENTS AND METHODS: Patients were classified into three groups according to clinical signs and symptoms: Group I includes patients who have cervical spondylosis as demonstrated by MRI (narrowing of the spinal canal, discal herniation, spinal cord compression) but no complaints or signs suggestive of myelopathy. RESULTS: In Group II patients had minor, non-specific complaints, such as paraesthesia of the legs and gait disturbance raising the possibility of myelopathy, but neurological examination revealed no pyramidal signs. In Group III patients had pyramidal signs as well. In Group I corticospinal function was normal in all patients, as assessed by MEP examination. In Group II all patients had prolonged central motor conduction time or absent responses to cortical stimulation. Likewise, in Group III MEP revealed abnormal corticospinal function in all patients but one. CONCLUSIONS: In summary, MEP proved sensitive in the detection of corticospinal dysfunction in myelopathy associated with cervical spondylosis at a stage when clinical signs of pyramidal lesion are not yet present and patients have only minor complaints. On the other hand, if patients are completely symptom free with regard to myelopathy, MEP is also unlikely to disclose corticospinal dysfunction. If pyramidal lesion is evident already by clinical examination, MEP provides no further help. 'False-negative' results are also possible. SN - 0019-1442 UR - https://www.unboundmedicine.com/medline/citation/12690791/[Role_of_motor_evoked_potentials_in_the_diagnosis_of_myelopathy_associated_with_cervical_spondylosis]_ DB - PRIME DP - Unbound Medicine ER -