Vasculature

Question 1

Which anastomosis does does Superior Gluteal Artery participate in?

Answer 1

Trochanteric anastomosis

Question 2

What muscles do the two branches (superficial and deep) of the Superior Gluteal artery give blood supply?

Answer 2

Superficial = gluteus maximus
Deep = Gluteus medius, minimus and TFL

Question 3

Which anastomosis does the inferior gluteal artery participate in?

Answer 3

Cruciate anastomosis

anastomoses with superior gluteal artery

Question 4

Which arteries form the cruciate anastomosis?

Answer 4

Inferior gluteal a.
Medial femoral a.
Ascending and Transverse branches of Lateral femoral circumflex
1st perforating a. of Profunda femoris a.

Question 5

What does cruciate anastomosis connect?

Answer 5

Internal iliac a. & Femoral a.

Question 6

What could cause an injury to Superior Gluteal n?

What would be the result?

Answer 6

Pelvic fracture; compression by fetal head
Glut medius and minimus impaired = weakened ABD of thigh & impaired MR
= “Gluteal Gate”
Pelvis tilts toward undamaged side; “positive Trendelburg test/sign”; makes limb too long/can’t clear ground during swing phase = patient lean to undamaged side so leg can swing

Question 7

Which side of gluteal region is in danger for injury to sciatic region?

Answer 7

Medial side = danger side
Damaged by piriformis compression, surgery
If complete section occurs, leg becomes useless, all ankle/foot movements lost, extension of hip and flexion of leg is impaired
Sensation lost to all areas below knee except where supplied by saphenous n.

Question 8

Which nerves make up Lumbosacral Plexus?

Answer 8

Iliohypogastric and ilioinguinal nn. (VPR L1