0:00

The femoral nerve is a mix mortar

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and sensory nerve originates from the L two NL four nerve

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roots and will, uh, provide innervation to the iliac

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and SOAs muscles proximally

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and more distally to the pectineus, sartorius

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and quadriceps, uh, muscles.

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So illustrated here is the, uh, motor innervation

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of the femoral nerve, uh, involving the, uh,

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supplying the quadriceps and the sartorius muscle.

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The femoral nerve will initially run in a groove

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between the SOAs and iliac, uh, muscles, supplying them,

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and then we'll course beneath the inguinal uh, ligament

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where it'll divide into a superficial and a deep branch.

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The superficial branch will supply the pectineus muscle

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and the sartorius muscle,

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whereas the deep branch will supply the quadriceps muscle.

0:54

Uh, the deep branch will also give off a small, um,

0:59

nerve, the ous nerve, which is purely sensory,

1:02

and will supply the sensory innervation at the middle knee

1:06

and lower leg down to the ankle.

1:09

So here we have on this axle image the femoral nerve in the

1:13

ilio sous groove.

1:15

So the femoral nerve here can be, uh, injured, uh, by,

1:20

uh, trauma to the ilios muscle.

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And here more distally at the iliac tunnel,

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you can see the femoral nerve lateral

1:28

to the artery and vein.

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And in that location it's,

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it can be injured if there's arterial punctu puncture

1:36

or a va, a vascular stent, uh, hernia repair

1:40

or hip surgery, for example.

1:43

So this is a patient who, uh, had a, who fell downstairs

1:48

and Mr was done to allow the hip fracture.

1:51

And you can see that he has, uh, strain, uh,

1:55

of his ilio muscle, which is markedly emus

1:59

and also enlarged.

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And notice here at the anterior aspect,

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you can see that.here corresponding

2:07

to the femoral nerve, which is enlarged.

2:09

So it's probably compressed between the fascia

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and the swollen, uh, muscle underneath.

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Eight weeks later, developing severe pain in his

2:18

quadriceps quadriceps muscle.

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He was, uh, re imaged

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and now you can see that he has, uh, severe, uh,

2:26

muscle edema involving the quadriceps muscle in the

2:30

corresponding to the territory of innervation

2:33

of the femoral nerve.