APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The femoral nerve is the largest nerve of the lumbar plexus. It forms from the dorsal divisions of the L2-L4 ventral rami. [1] It has a role in motor and sensory processing in the lower limbs. As a result, it controls the major hip flexor muscles, as well as knee extension muscles.

Detailed explanation-2: -The primary nerve contained within the femoral triangle is the femoral nerve, arising from L2, L3, and L4. It enters the femoral triangle inferior to the inguinal ligament, external to the femoral sheath, and is the most lateral of the significant structures contained within the triangle.

Detailed explanation-3: -The lateral femoral cutaneous nerve, also referred to as the lateral cutaneous nerve of the thigh, is formed by fibers of the posterior divisions of the anterior/ventral rami of spinal nerves L2 and L3. It emerges from the lateral border of the psoas major muscle and courses inferolaterally to enter the iliac fossa.

Detailed explanation-4: -NAVEL is a mnemonic for remembering the neurovascular structures that travel deep to the inguinal ligament into the femoral triangle. The femoral nerve provides sensory innervation to the skin of the anterior thigh and the anteromedial aspect of the leg.