Does lumbar plexus femoral nerve segment still have 20 years to save?

summary

The femoral nerve is located on the lateral side of the femoral artery and immediately divided into several muscular branches and cutaneous branches, two of which are always accompanied by the artery and femoral vein. The femoral nerve comes from L2-L4. The thickest of the branches of the lumbar plexus runs between psoas major and iliopsoas muscle in the iliac fossa, and sends out muscular branches to the two muscles. After passing through the inguinal ligament to the thigh, it is immediately divided into the following terminal branches, and the muscular and cutaneous branches of the quadriceps femoris innervating its distribution area. Does lumbar plexus femoral nerve segment still have 20 years to save?

Does lumbar plexus femoral nerve segment still have 20 years to save?

The femoral nerve (L2-4) is the largest branch of the lumbar plexus. It descends between the psoas major and iliac muscles and branches to this muscle. Accompanied with psoas major. Through the deep surface of the inguinal ligament, it enters the thigh, and then it is divided into several branches. Variation: the common type of femoral nerve is composed of lumbar 1-4, about 67.9%. Sometimes, an extra branch, called accessory femoral nerve, is sent out between the femoral nerve and obturator nerve, which is located between the greater (lesser) lumbar muscle and iliopsoas fascia. After entering the femoral nerve, it is also distributed in the distribution area of the femoral nerve (5.6%).

The femoral nerve is the motor nerve of the anterior thigh muscle. It branches immediately after it appears from the back of the midpoint of the inguinal ligament. Its muscular branches enter and dominate the sartorius muscle, rectus femoris muscle, lateral femoris muscle and medial femoris muscle, and the medial femoris nerve branches to the knee joint muscle; Another branch to the pubic muscle; The muscular branches send out small articular branches into the hip joint and knee joint.

The anterior cutaneous branch usually has two branches, near the junction of the upper and middle 1 / 3 of the thigh, respectively in the medial sartorius muscle, passing through the sartorius muscle (dominating the muscle) to the deep surface of the fascia lata, and then through the fascia lata, distributed in the skin of the middle and lower part of the thigh, with branches down to the knee joint, and branches to the inferior patellar branch of the saphenous nerve.

matters needing attention

Femoral nerve injury, femoral nerve injury, difficult to bend thigh, unable to extend leg in sitting position, difficult to walk; Atrophy of quadriceps femoris and patella protrusion; The knee jump reflex disappeared; Sensory disturbance occurred in the front of the thigh and the inner side of the leg.