Abstract

The lumbar plexus is a network of nerves which comprises of the ventral primary rami of the first, second, third and fourth lumbar spinal nerves (L1 - L4).Awareness of the possibility of encountering multiple variations may prevent post-operative complications. This would also be useful information for Anatomists, Anaesthesiologists, Gynaecologists, Orthopedicians and Surgeons. Aim-: The aim of this study was to evaluate the incidence and variation in the formation of obturator nerve and accessory obturator nerve. Material and method-: The study was carried out on a total of 60 lumbar plexuses taken from 30 cadavers in the department of anatomy index medical college (MP), and govt medical college, doda (J&K). For the purpose of providing a more transparent depiction of the observed variation, each item has been photographed with a digital camera. Result-: The normal origin of ON is from the root segments of the ventral divisions L2, L3, and L4 was found in 81.66% cadavers. ON was absent in 8 out of 60 plexuses (which is a percentage of 13.3%). There was no any exceptional branching pattern found in any of the plexuses. The accessory obturator nerve was found in 12 different lumbar plexuses and had a normal origin from the ventral division of the L2-L3 roots. Conclusion-: 81.66% of cadavers were having obturator nerve arising from ventral division of L2, L3, L4 and Only 12 of the 60 plexuses have the Accessory Obturator Nerve present. As it travels along the superior pubic ramus, it has the potential to undergo selective compression. Groin discomfort is a symptom that can have a variety of causes, one of which is the compression and consequent neuropathy of the accessory obturator nerve. This is because the accessory obturator nerve innervates the hip joint.

Description