Gluteal Region Flashcards
superior cluneal nerves- level, what does it supply (dematomal)
PPR L1-3
Supply buttock below the 1/3 of iliac crest and take the central part and descend as lat as greater trochanter
medial cluneal nerves- level and what does it supply (dermatomal)
PPR s1-3
medial aspect of buttock
iliohypogastric and subcost- level and what does it supply (dematomal)
iliohypo- APR l1
Subcost- APR T12
superiolat and inf 1/3 of the iliac crest
Perforating nerves- levels and what does it supply (dermatomal)
APR s2,3
inf and medial buttock region
Inf cluneal nerves- levels and what does it supply (dematomal)
S1-3
inf buttock lateral region
post branch of later cutaneous femoral- level and what does it supply (dermatomal)
S1,2,3
skin over the greater trochanter, lat aspect of the thigh and a little bit post
landmarks for sup border of glute max
PSIS to greater trocanter
landmarks for inf border of glute max
apex of coccyx to ishial tuberosity
where are the bursas located for the glute max
bw glute and ishial tuberosity
bw greater trochanter and glute max
what % of glute max fibres go to IT band and greeter trochanter
75% to IT band
what forms the IT band
75% glute max, tensor fascia lata, lat septum
When is a trendelenbergs signs positive and what nerves are affected
when standing on one limb, the pelvis drops on uneffected side
L4,5,S1 (sup cluneal)
Spinal cord level of tibial div of sciatic nerve and common fibular
Tib=APR L4-S3
Fib= APR L4-S2
what exits out of the suprapiraform space (3)
- Sup gluteal artery
- Sup gluteal vein
- Sup gluteal nerve
what exits out of the infrapiraform space
the rest of the nerves of the sacral plexus except pudendal+ nerve to obturator internus
what exits out of the lesser sciatic foramen
(goes back into the pelvic cavity)
pudendal nerve
nerve to obturator internus
+ their corresponding vessels
where does the sciatic nerve usually emerge from and what is the varient that can happen
Usually emerges under the piriformis (infrapiraform space)
-Fibular div is variable sometimes when it pierces the piroformis (12-17%)
what are the landmarks to find the sciatic nerve
midpoint bw the greater trochanter and ischial tub
what muscles does the sup gluteal nerve run thru
between gluteus med and min
inervates glute med, min, tfl
where does the sciatic nerve split into its 2 terminal branches
between middle and distal third of the leg
Common fibular deviates laterally
what does the nerve to quad femoris and inf gemmellus run on top of
Sciatic nerve
where does the post femoral nerve pass in relation to the sciatic and what branches does it have
medial to sciatic nerve
-@ inf gluteal fold it will send peroneal branches and inf cluneal nerves
Terminates in proximal posterior mid leg
what does the inf gluteal muscle supply
lower half of gluteus max, Sciatic nerve (thus ischemia may cause sciatica issues) , hamstrings, greater trochanetr
what 4 blood vessels make up the arterial crutiate anastomoses
inf gluteal artery
transvere branch of medial circumflex
transverse branch of lateral circumflex
perforating branch of deep artery of thigh
(all on posterior side of greater trochanter, so they will never do surgery from this side)
