Femoral nerve

Question 1

Anatomical course

Answer 1

Descends through psoas major and travels though the pelvis to approx midpoint of inguinal ligament.
It then enters the thigh, posterior to inguinal ligament, dividing into anterior and posterior division.
It passes through the femoral triangle lateral to femoral vessels and gives off articular branches to hip and knee joints.

Question 2

What is the terminal cutaneous branch of femoral nerve and what does it do

Answer 2

Saphenous nerve

Sensory Innervation of skin over medial side of leg and foot

Question 3

Motor Innervation

Answer 3

Pectineus,
Iliacus,
Sartorius,
Quadriceps femoris

Question 4

What is the first cutaneous branch of the femoral nerve and what does it do

Answer 4

Anterior cutaneous branches that arise in the femoral triangle
Sensory Innervation of skin over anteromedial thigh

Question 5

Why is stripping of Saphenous vein carried out and why is this dangerous

Answer 5

Varicose veins

Long sephanous vein is accompanied by the sephanous nerve which can be damaged in the process

Question 6

Consequences of damage to sephanous nerve

Answer 6

Pain,
Paresthesia,
Complete loss of sensation over sensory distribution

Question 7

When is femoral nerve block required

Answer 7

For patients requiring lower limb surgery who can’t tolerate general anaesthetic
For post operative analgesia for patients with a fractured neck of femur who can’t tolerate particular analgesics

Question 8

Nerve roots

Answer 8

L2-4

Question 9

What are the cutaneous branches of the femoral nerve

Answer 9

First - anterior cutaneous branch

Terminal - saphenous branch