8: Thigh Angiology And Neurology Flashcards
Four major nerves of the thigh
Femoral, obturator, sciatic, saphenous
Femoral N spinal levels
L2-4
Obturator N spinal levels
L2-4
Sciatic N spinal levels
L4-S3
What does the sciatic N supply?
Posterior thigh, everything in leg and foot
Two nerves from the sciatic N
Tibial, common fibular N
Tibial N spinal levels
L4-S3
Common fibular N spinal levels
L4-S2
Saphenous nerve
Cutaneous nerve that supplies skin of the anteromedial knee and leg + medial foot
Where does saphenous nerve become superficial?
Between sartorius and gracilis
What does the saphenous nerve travel with?
Great saphenous V
What does the patellar tendon reflex test?
Femoral N function
Absense or decrease in patellar tendon reflex is called?
Westphal’s sign
What does calcaneal tendon reflex test?
S1 and S2 nerve roots
Two cutaneous nerves to the anterior thigh
Femoral N, lateral femoral cutaneous
Cutaneous N to the medial thigh
Saphenous N
Cutaneous N to the lateral thigh
Lateral femoral cutaneous
Cutaneous nerves to the posterior thigh
Posterior femoral cutaneous, cluneal N’s
Meralgia paresthetica
Compression of lateral femoral cutaneous nerve as it passes under inguinal ligament -> pain on lateral thigh
Population most susceptible to meralgia paresthetica
Police officers due to gun belt
Seven nerves that send cutaneous branches to the anteromedial thigh
Subcostal N, genitofemoral N, ilioinguinal N, saphenous N, lateral femoral cutaneous N, femoral N, obturator N
Spinal levels of the lateral femoral cutaneous N
L2-3
Path from descending aorta to femoral artery
- Descending aorta
- Common iliac A
- External iliac A
- Femoral A
Chief arterial supply to lower limb
Femoral A
A notable inferior branch of the femoral artery
Descending genicular A
Largest branch of the femoral A
Profunda femoris
Perforating A’s from profunda femoris: path
Move posteriorly through adductor magnus -> supply posterior thigh
Two major branches of the profunda femoris
Medial and lateral circumflex A’s (in femoral triangle)
Two uses for palpating the femoral artery
- Radio graphic visualization of left heart and coronary vessels
- Compression can help stop LE bleeds
Three main A’s that supply blood to the head of the femur
- Medial circumflex femoral A***
- Lateral circumflex femoral A
- Foveal A (from obturator)
Main superficial vein of the thigh
Great saphenous V
Great saphenous V: drains what and into what?
Drains: bulk of thigh and leg -> into femoral V
What does the small saphenous V drain?
Lateral aspect of foot/leg
Five main veins of the thigh
- Great saphenous V
- Small saphenous V
- Deep femoral V
- Lateral circumflex V
- Medial circumflex V
Perforating veins
Exchange blood from superficial to deep veins
Two names of superficial veins of the thigh
Dodd’s veins, Boyd’s veins
2 clinical uses of the great saphenous V
- Administering blood, electrolytes, drugs, etc.
2. Coronary bypass surgery
Saphenous cutdown
Incision anterior to medial malleolus to reach great saphenous V
Possible side effect of saphenous cutdown
Pain along medial border of foot
Five major nerve branches from the Lumbosacral Plexus
- Femoral N
- Obturator N
- Sciatic N
- Lateral femoral cutaneous N
- Posterior femoral cutaneous N
