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  • Title: [Application of the modified Sihler's stain technique to cadaveric peripheral nerves after medical students' dissection course].
    Author: Sekiya S, Suzuki R, Miyawaki M, Chiba S, Kumaki K.
    Journal: Kaibogaku Zasshi; 2005 Sep; 80(3):67-72. PubMed ID: 16196427.
    Abstract:
    The exact ramification and distribution pattern of the peripheral nerves is one of the most important information for anatomists and clinicians. However, it is very difficult to pursue perfectly all of the fine twigs of nerve branches even if we use a stereoscopic microscope. Recently, Liu et al. (Anat. Rec., 247: 137, 1997) applied a modified Sihler's stain technique to study the distribution of intramuscular nerve branches in mammalian skeletal muscles. Then, we attempted to apply this technique to plantar nerves of human foot removed from cadavers which were used for ordinary dissection practices at the School of Medicine. Intrinsic muscles of the foot with motor and sensory nerve branches were removed en bloc from bones of the foot. They were macerated and depigmented in 3% aqueous potassium hydroxide, decalcified in Sihler's solution 1. Then, after staining in Sihler's solution II, they were destained in Sihler's solution I, neutralized in 0.05% lithium carbonate, and cleared in increasing concentrations of glycerin. As a result, each nerve fascicle, which are bundles of nerve fibers invested by the perineurium, was very clearly visualized, since only nerve fibers were stained deep blue-purple, while muscles, the epineurium and the perineurium were made transparent in glycerin. We found an anastomosis between a deep branch of the lateral plantar nerve and the medial plantar nerve, composed of several nerve fascicles. Therefore, the modified Sihler's stain technique can be applied to cadaveric peripheral nerves after medical students' dissection course.
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