ArticleAnnals of Indian Academy of Neurology
Sural Radial Amplitude Ratio: A Study in Healthy Indian Subjects.
Article in Annals of Indian Academy of Neurology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Sural/Radial Amplitude Ratio: A Useful Tool to Diagnose Non-Length-Dependent Neuropathy.Muscle & nerve · 2026Article
- Sural/Radial Amplitude Ratio in Healthy Adults: Influence of Anatomical and Demographic Variables.Basic and clinical neuroscience · 2025Article
- Medial Plantar Sensory Nerve Action Potential: A Study for Reference Data in Indian Subjects.Annals of Indian Academy of NeurologyArticle
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
contextThe amplitude ratio of sural radial sensory nerve action potential is used as a sensitive measure for the diagnosis of an early distal axonal peripheral neuropathy. There is no age-stratified reference data available.
aimTo establish age-stratified sural radial amplitude ratio (SRAR) reference data in healthy Indian subjects. STUDY SETTING AND
designThe study was conducted in the electrodiagnostic laboratory of a tertiary city hospital and is an analytical, prospective, and field trial study. MATERIALS AND
methodsA prospective study was conducted on 146 healthy volunteers between 18 and 86 years, stratified into 6 groups, a = 18-30 years, b = 31-40 years, c = 41-50 years, d = 51-60 years, e = 61-70 years, and f = >70 years. SURAL: Radial amplitude ratio was calculated. STATISTICAL
methodsStata 12.1 statistical program was used. Lower limit of SRAR was obtained (mean-2SD of transformed data). ANOVA defined the intergroup variability, and linear regression and Pearson's correlation assessed the statistical significance.
resultsThe lower limit of normal SRAR, for each age group is as follows: a: 0.30, b: 0.23, c: 0.20, d: 0.17, e: 0.17, and f: 0.08. SRAR of groups a, b, c was significantly different from groups e and f. Similarly, SRAR was significantly different between groups d and
conclusionThis study provides age-stratified reference data for SRAR. There is evidence to suggest that SRAR varies with age; hence, a single value of SRAR should not be used when diagnosing a peripheral neuropathy based on this criterion.
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