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Medial plantar nerve conduction studies in healthy controls and diabetics.
Clin Neurophysiol. 2007 May; 118(5):1155-61.CN

Abstract

OBJECTIVE

To collect a reference material of the medial plantar nerve action potential, to test intra/interobserver reliability in healthy controls and to apply the test to a group of patients with diabetes mellitus.

METHODS

98 healthy controls and 50 patients with diabetes mellitus were included. The medial plantar nerve was stimulated orthodromically and recorded with a surface electrode. In the patient group, NCS of motor and sensory nerves and quantitative sensory testing were also performed.

RESULTS

Responses of the medial plantar nerve were obtained from all controls except from one aged 72. Amplitude decreased with age (r=-0.68, p<0.0001). Intra/interobserver reliability was acceptable. 52% of the patients had abnormal overall NCS classification. Forty-eight percent had delayed tibial F-response latency. The medial plantar NCS were abnormal in 59% of the cases (47% abnormal NAP amplitude and 39% reduced CV), 59% of those with abnormal NCS had symptoms of sensory polyneuropathy. Only 24% had abnormal sural amplitude. Cold perception threshold was abnormal in more patients (30%) than warmth perception threshold (14%).

CONCLUSIONS

Responses were easily obtained in controls under 70 years. In diabetics the amplitudes of the medial plantar nerve were abnormal more often than in the sural nerve.

SIGNIFICANCE

The medial plantar nerve response is reliable in patients under 70 years, and intra/interobserver reliability is acceptable.

Authors+Show Affiliations

Løseth S
Department of Neurology, Institute of Clinical Medicine, University of Tromsø and University Hospital of North Norway, Tromsø, Norway. sissel.loseth@unn.no
Nebuchennykh M
No affiliation info available
Stålberg E
No affiliation info available
Mellgren SI
No affiliation info available

MeSH

Action PotentialsAdolescentAdultAgedAgingChildCold TemperatureDiabetes MellitusDiabetic NeuropathiesElectric StimulationEvoked Potentials, MotorFemaleFootHot TemperatureHumansMaleMiddle AgedMotor NeuronsNeurons, AfferentObserver VariationPeripheral NervesReproducibility of ResultsSensory ThresholdsSural Nerve

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17321794

Citation

Løseth, Sissel, et al. "Medial Plantar Nerve Conduction Studies in Healthy Controls and Diabetics." Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, vol. 118, no. 5, 2007, pp. 1155-61.
Løseth S, Nebuchennykh M, Stålberg E, et al. Medial plantar nerve conduction studies in healthy controls and diabetics. Clin Neurophysiol. 2007;118(5):1155-61.
Løseth, S., Nebuchennykh, M., Stålberg, E., & Mellgren, S. I. (2007). Medial plantar nerve conduction studies in healthy controls and diabetics. Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, 118(5), 1155-61.
Løseth S, et al. Medial Plantar Nerve Conduction Studies in Healthy Controls and Diabetics. Clin Neurophysiol. 2007;118(5):1155-61. PubMed PMID: 17321794.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Medial plantar nerve conduction studies in healthy controls and diabetics. AU - Løseth,Sissel, AU - Nebuchennykh,Maria, AU - Stålberg,Erik, AU - Mellgren,Svein Ivar, Y1 - 2007/02/26/ PY - 2006/06/19/received PY - 2006/12/20/revised PY - 2007/01/14/accepted PY - 2007/2/27/pubmed PY - 2007/6/15/medline PY - 2007/2/27/entrez SP - 1155 EP - 61 JF - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology JO - Clin Neurophysiol VL - 118 IS - 5 N2 - OBJECTIVE: To collect a reference material of the medial plantar nerve action potential, to test intra/interobserver reliability in healthy controls and to apply the test to a group of patients with diabetes mellitus. METHODS: 98 healthy controls and 50 patients with diabetes mellitus were included. The medial plantar nerve was stimulated orthodromically and recorded with a surface electrode. In the patient group, NCS of motor and sensory nerves and quantitative sensory testing were also performed. RESULTS: Responses of the medial plantar nerve were obtained from all controls except from one aged 72. Amplitude decreased with age (r=-0.68, p<0.0001). Intra/interobserver reliability was acceptable. 52% of the patients had abnormal overall NCS classification. Forty-eight percent had delayed tibial F-response latency. The medial plantar NCS were abnormal in 59% of the cases (47% abnormal NAP amplitude and 39% reduced CV), 59% of those with abnormal NCS had symptoms of sensory polyneuropathy. Only 24% had abnormal sural amplitude. Cold perception threshold was abnormal in more patients (30%) than warmth perception threshold (14%). CONCLUSIONS: Responses were easily obtained in controls under 70 years. In diabetics the amplitudes of the medial plantar nerve were abnormal more often than in the sural nerve. SIGNIFICANCE: The medial plantar nerve response is reliable in patients under 70 years, and intra/interobserver reliability is acceptable. SN - 1388-2457 UR - https://www.unboundmedicine.com/medline/citation/17321794/Medial_plantar_nerve_conduction_studies_in_healthy_controls_and_diabetics_ DB - PRIME DP - Unbound Medicine ER -