Motor nerve conduction velocity in normal children under 5 years of age

Conduction velocity of any nerve is determined by myelination, diameter of the fiber, and internodal differences. Since all these three factors are remodeled during normal development of a nerve, motor nerve conduction velocity (MNCV) varies in different age groups in under-five children. Conclusion: MNCV of nerves of both upper and lower limbs varies significantly with age in children under 5 years of age. [...]it is essential to have standard values of MNCV for the different age groups of under-five children while conducting nerve conduction studies. Comparison of mean MNCV of ulnar, median, and common peroneal nerve between different age groups was statistically significant (P < 0.05). [...]there was a significant positive correlation between age factor and MNCV with r = 0.897, 0.908, and 0.859, respectively, for ulnar, median, and common peroneal nerve. CONCLUSION MNCV of ulnar, median, and common peroneal nerve increases steadily during normal development from birth to 5 years of age, and a significant positive correlation exists between age factor and MNCV in these children. [...]it is essential to have reference values of MNCV for the different age groups of children under 5 years of age while conducting electrophysiological studies on nerve conduction.