SAPHENOUS NERVE

 

ORIGIN: Femoral nerve

COURSE/DISTRIBUTION: This is the largest of the cutaneous branches of the femoral nerve. It initially runs downwards lateral to the femoral vessels in the femoral triangle. It then enters the adductor (subsartorial) canal with the femoral vessels but abandons the vessels at the lower part of the canal. Before reaching the apex of the triangle, it abandons the artery and runs to the medial side of the thigh accompanied by the saphenous branch of the descending genicular artery. It then passes downwards on the medial aspect of the thigh to reach the point where it pierces the deep fascia to become subcutaneous, between the sartorius and the gracilis. It reaches the medial border of the tibia which it follows down to the lower third of leg where it divides into its two terminal branches.

BRANCHES:

         Lateral branch which reaches the ankle

         Medial branch which reaches the metatarsophalangeal joint of the great toe by running on the medial aspect of the foot. The two nerves supply the skin of the medial aspect of the foot from the ankle to metatarsophalangeal joint.

 

ROOT VALUE: L3,4.

 

 

 

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Electronic School of Medicine
Creator: Oluwole Ogunranti


Saphenous nerve block

 

 

 

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Creator: Oluwole Ogunranti