Basic Principles of Peripheral Nerve Disorders

Background Electrodiagnostic studies, which serve as an extension of clinical examination, play an important role in evaluating patients with neuromuscular disorders. Therefore, each electromyography laboratory must have normative data for its population to establish reference values for nerve conduction study (NCS) parameters, and many carefully screened healthy subjects are required. Objectives To provide the normative data for a nerve conduction study among adults in Sulaimani province. And evaluate the impact of age, gender, and anthropometric measures on NCS parameters. Patients and Methods A cross-sectional study was conducted at the electromyography unit of Shahid Dr. Aso Hospital in Sulaimani, Iraq. The study involved 300 healthy participants with an approximately equal proportion of the two genders. Their age ranged from 20 to 60 years. The subjects were enrolled in the study according to specific inclusion criteria after history checking and undergoing neurological examination. Results The study included 144 (48%) male and 156 (52%) female participants. The DMLs and DSLs of all the tested nerves turned out to be significantly shorter in females. CMAP-As and SNAP-As were considerably higher in females. The MCVs and SCVs of all nerves were markedly faster in females. Also, the median and ulnar FMINLAT results showed to be significantly shorter in females. Aging has led to a significant prolongation of median DML and DSL, reduction in CMAP-A and SNAP-A, and slowing of MCV and SCV. Similar results were obtained for ulnar and radial nerves with different levels of statistical significance. Using Pearson’s correlation, the DML, DSL, and FMINLATs of all the tested nerves showed a significant positive linear correlation with height. Conclusion Age and BMI did not show a systematic pattern of influence on any of the NCS parameters, demonstrating variable effects with variable levels of significance. In NCS, applying universally standardized techniques may result in different NCS data to the existing literature regarding latencies, amplitudes, nerve conduction velocities, and F-wave data.

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Lateral Antebrachial Cutaneous Nerve as a Donor Source for Digital Nerve Grafting: A Concept Revisited

Ünal¹,

Gokkus²,

Şirin³

et al. 2017

TOORTHJ

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Objective:The main objective of this study is to evaluate the availability of lateral antebrachial cutaneous nerve (LACN) autograft for acute or delayed repair of segmented digital nerve injuries.Patients and Methods:13 digital nerve defects of 11 patients; treated with interposition of LACN graft that harvested from ipsilateral extremity were included in the study. Mean follow up period was 35, 7 months. The mean time from injury to grafting is 53, 3 days. The results of the mean 2PDT and SWMT values of injured /uninjured finger at the end of follow up period were evaluated with Paired T test. The correlation between the defect length and the difference of 2PDT, SWMT values between the uninjured and injured finger at the end of follow up period; were evaluated with Pearson - correlation analysis.Results:The mean value of our 2PDT and SWMT results are ~5,923, ~3, 52, respectively in which can be interpreted between the normal and diminished light touch. The defect length and difference percentage of SWMT values is positively and significantly correlated statistically. Mean length of interposed nerve grafts was 18.5 mm. The age of the patient and the mean values of 2PDT and SWMT with the difference % of 2PDT and % of SWMT are not statistically correlated.Conclusion:Based on results regarding sensory regaining at recipient side and negligible sensory deficit at harvesting side, we suggest that lateral antebrachial cutaneous nerve might be a valuable graft option for digital nerve defects.

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Basic Principles of Peripheral Nerve Disorders

Cited by 3 publications

References 392 publications

Rehabilitation, Physiotherapy and Prosthetics

Rehabilitation, Physiotherapy and Prosthetics

Normative Data of Nerve Conduction Study of Upper Limb Nerves Among Adults in Sulaimani Province: A Cross-Sectional Study

Lateral Antebrachial Cutaneous Nerve as a Donor Source for Digital Nerve Grafting: A Concept Revisited

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