Types of the endoneurial oedema after the crush injury of the peripheral nerve in albino rat

This study included 20 male albino rats; the left common peroneal nerves of 18 rats were subjected to crush injury, while 2 rats were used as a control. The common peroneal nerves were exposed and some of their parts distal to the crush injury were taken. The specimens were prepared for study by electron microscope. The results showed that the endoneurial edema was distributed all over the endoneurium, especially in the sub-perineurial and perivascular areas forming sub- perineurial and perivascular edema. The axoplasm of the nerve axons showed edema fluid causing a separation of its contents of the cell organelles, intra-axonal edema. Also, the mitochondria became swollen with ill-defined internal cristae, intra-mitochondrial edema. The endothelial cells of the endoneurial blood vessels became partially swollen due to internal edema. The perineurium also became thick and edematous due to the presence of fluid between its layers, intra-perineurial edema

Origin, course, distribution of the superior gluteal nerve and its relation to the superior gluteal artery and gluteal muscles

Ten pelvic halves of five Egyptian male cadavers were dissected in order to obtain a precise anatomical knowledge of the origin, course and distribution of the superior gluteal nerve and its relation to the corresponding artery. The more anterior parts of the glutei medius and minimus were innervated by branches of the superior gluteal nerve that were revealed to originate more cranially, and the tensor fasciae latae was innervated by the cranialmost element of the nerve. Based on these findings, it might be proposed that the course and distribution of the superior gluteal nerve are directly influenced by the anterior rotation of the gluteus medius