Light microscopy study of Schmidt-Lantermann incisures in the guinea pig sciatic nerve

The authors studied the shape, orientation and number of Schmidt-Lantermann incisures in the sciatic nerve of the healthy guinea pig. The nerves were removed, fixed, shredded and evaluated in the light microscope. Internode length, fibre diameter and segment length were measured in isolated nerve fibres with an eyepiece micrometer. The number and configuration of the Schmidt-Lantermann incisures in the internode were found to be variable. The incisures follow one another at irregular intervals, dividing the whole internode into cylindroconical segments of varying lengths. The measured values were processed on a PMD 85/2 personal microcomputer.