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[Central motor conduction time in diagnosis of spinal processes].
Nervenarzt. 1993 Apr; 64(4):233-7.N

Abstract

In patients with extra- and intramedullary spinal disorders (32 cases with myelopathy due to cervical spondylosis, 11 with syringomyelia and 17 with spinal tumours) central motor conduction time (CMCT) was studied after transcranial magnetic stimulation of the cortex. Compound muscle action potentials (CMAP) were recorded from abductor digiti minimi muscle (ADM) and anterior tibial muscle (TA) bilaterally. Of 37 patients with extramedullary located cervical lesions CMCT to the ADM was abnormal in 51% (n = 19) and to the TA in 70% (n = 26). In 10 patients with intramedullary cervical lesions abnormal CMCT to the ADM as well as to the TA was observed in 30% (n = 3) each. In extramedullary disorders measurement of CMCT to the TA was more sensitive in detecting impaired central motor conduction, though not significantly. Prolonged CMCT correlated to clinical signs of upper motor neuron involvement and to spinal cord compression. In addition, the method proved useful for detection of subclinical lesions of corticospinal pathways. The different results between intra- and extramedullary affections are explained by the anatomical localisation of pyramidal tract fibers.

Authors+Show Affiliations

Brunhölzl C
Neurologische Klinik, Universität Erlangen-Nürnberg.
Claus D
No affiliation info available
Bianchi E
No affiliation info available

MeSH

AdultAgedCervical VertebraeElectromagnetic FieldsElectromyographyFemaleHumansIntervertebral Disc DisplacementMaleMiddle AgedMotor CortexMusclesNerve Compression SyndromesPyramidal TractsReaction TimeSpinal Cord DiseasesSpinal Cord NeoplasmsSpinal DiseasesSpinal Nerve RootsSpinal OsteophytosisSynaptic TransmissionSyringomyelia

Pub Type(s)

English Abstract
Journal Article
Research Support, Non-U.S. Gov't

Language

ger

PubMed ID

8389424

Citation

Brunhölzl, C, et al. "[Central Motor Conduction Time in Diagnosis of Spinal Processes]." Der Nervenarzt, vol. 64, no. 4, 1993, pp. 233-7.
Brunhölzl C, Claus D, Bianchi E. [Central motor conduction time in diagnosis of spinal processes]. Nervenarzt. 1993;64(4):233-7.
Brunhölzl, C., Claus, D., & Bianchi, E. (1993). [Central motor conduction time in diagnosis of spinal processes]. Der Nervenarzt, 64(4), 233-7.
Brunhölzl C, Claus D, Bianchi E. [Central Motor Conduction Time in Diagnosis of Spinal Processes]. Nervenarzt. 1993;64(4):233-7. PubMed PMID: 8389424.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Central motor conduction time in diagnosis of spinal processes]. AU - Brunhölzl,C, AU - Claus,D, AU - Bianchi,E, PY - 1993/4/1/pubmed PY - 1993/4/1/medline PY - 1993/4/1/entrez SP - 233 EP - 7 JF - Der Nervenarzt JO - Nervenarzt VL - 64 IS - 4 N2 - In patients with extra- and intramedullary spinal disorders (32 cases with myelopathy due to cervical spondylosis, 11 with syringomyelia and 17 with spinal tumours) central motor conduction time (CMCT) was studied after transcranial magnetic stimulation of the cortex. Compound muscle action potentials (CMAP) were recorded from abductor digiti minimi muscle (ADM) and anterior tibial muscle (TA) bilaterally. Of 37 patients with extramedullary located cervical lesions CMCT to the ADM was abnormal in 51% (n = 19) and to the TA in 70% (n = 26). In 10 patients with intramedullary cervical lesions abnormal CMCT to the ADM as well as to the TA was observed in 30% (n = 3) each. In extramedullary disorders measurement of CMCT to the TA was more sensitive in detecting impaired central motor conduction, though not significantly. Prolonged CMCT correlated to clinical signs of upper motor neuron involvement and to spinal cord compression. In addition, the method proved useful for detection of subclinical lesions of corticospinal pathways. The different results between intra- and extramedullary affections are explained by the anatomical localisation of pyramidal tract fibers. SN - 0028-2804 UR - https://www.unboundmedicine.com/medline/citation/8389424/[Central_motor_conduction_time_in_diagnosis_of_spinal_processes]_ L2 - https://medlineplus.gov/spineinjuriesanddisorders.html DB - PRIME DP - Unbound Medicine ER -