Gluteal Region Flashcards
Where does the Superior Cluneal N branch from?
Dorsal Rami of L1-L3
Where does the middle cluneal N branch from?
Dorsal Rami of S1-S3
Where does the Inferior Cluneal Nerves branch from?
From the Posterior Femoral Cutaneous N. which comes from Ventral Rami of S1-S3
Nerve impingment of the lumbar spine (~L3) can result in?
Pain over the distribution of the superior and medial cluneal nerves.
Map out lymphatic drainage of the superficial gluteal structures.
Superficial tissues of gluteal region
to
Superficial Inguinal nodes
to
External Iliac Nodes
to
Common iliac Nodes
to
Lumbar lymph nodes
to
Cisterna Chyli
to
Thoracic Duct
Map out the drainage of the deeper gluteal structures
Superior and Inferior gluteal nodes
to
Internal and External Iliac Nodes
to
Common Iliac Nodes
to
Lumbar lymph nodes
to
Cisterna Chyli
to
Thoracic Duct
The Greater Sciatic Foramina is a gateway to what structure?
The Pelvis
The Lesser Sciatic Foramina is a gateway to what structure?
The Perineum
What does the Sacrotuberous Ligament connect?
Posterior Sacrum to Ischial Tuberosity
What Structures run through the Greater Sciatic Foramen? (11)
Nerves
- Sciatic
- Superior Gluteal
- Inferior Gluteal
- Pudendal
- Posterior Femoral Cutaneous
- N to Quadratus Femoris
- N to Obturator Internus
Vessels
- Superior Gluteal A & V
- Inferior Gluteal A & V
- Internal Pudendal A & V
Muscles
- Piriformis
What structures run through the Lesser Sciatic Foramen?
- Tendon of Obturator Internus
- Internal Pudendal A & V
- Pudenal N
- N. to Obturator Internus
What structures run through both the Greater Sciatic Foramen and Lesser Sciatic Foramen?
- Pudendal N
- Internal Pudendal A & V
- N to obturator Internus
What is the function, innervation, and blood supply of the gluteus maximus M?
Action
Extension, Lateral rotation, rising from seating position
Innervation
Inferior Gluteal N (L5-S2)
Vascular
Superior + Inferior Gluteal Artery
What is the Action, Innervation, and Vascularization of the Gluteus Medius M. ?
Action
Abduct and medially rotate thigh
Nerve
Superior Gluteal Nerve
Vascular
Superior Gluteal Artery
What is the action, innervation, and blood supply to gluteus minimus m.?
Action
- Abduct and medially rotate thigh
Innervation
- Superior Gluteal N
Vascular
- Superior Gluteal Artery
What is the action, innervation, and blood supply of the Tensor Fascia Latae M.?
Action
- Abduct and Medially Rotate Thigh
Innervation
- Superior Gluteal N.
Vascular
- Lateral Circumflex A.
What are the Gluteal Muscles?
Gluteus Maximus
Gluteus Medius
Gluteus Minimus
Tensor Fascia Latae M.
What muscles Abduct and Medially Rotate Thigh?
Gluteus Medius M
Gluteus Minimus M
Tensor Fascia Latae M
What muscles are Lateral Rotators and Thigh extension/abductors?
- Piriformis M.
- Obturator Internus M.
- Superior Gamelli M.
- Inferior Gamelli M.
- Quadratus Femoris
What is the action, innervation, and blood supply of the piriformis muscle?
Action
- Laterally rotate extended thigh and abduct flexed thigh
Innervation
- N to Piriformis (branches of anterior rami S1 and S2)
Vascular
- Inferior Gluteal Artery
What is the action, innervation, and blood supply to the Obturator Internus M.
Action
- Laterally Rotate Extended thigh and abduct flexed thigh
Innervation
- N to Obturator Internus (L5, S1)
Vascular
- Inferior Gluteal A.
What are the same between the superior gamelli and inferior gamelli muscles?
Insertion onto medial surface of greater trochanter of femur
Inferior Gluteal Artery
Laterally Rotate extended thigh and abduct flexed thigh
What are different between the superior gamelli and inferior gamelli?
Origin
Superior - Ischial Spine
Inferior - Ischial Tuberosity
Innervation
Superior - N. to obturator internus
Inferior - N. to quadratus femoris (L5, S1)
What is the action, innervation, and blood supply to quadratus femoris?
Action
- Laterally rotates thigh
Innervation
- N to quadratus femoris (L5,S1)
Vascular
- Medial circumflex femoral A.
What is Piriformis Syndrome?
Tightness of the piriformis muscle causing irriation of Sciatic N.
What does the PIN structure consist of medial to lateral?
Pudendal N.
Internal Pudendal A.
N. to Obturator Internus
What are the Cruciate Anastomosis?
Inferior Gluteal A.
Medial circumflex femoral A
Lateral circumflex femoral A.
First perforating branch of deep femoral.
A trendelenbrug sign is positive for a lesion in what nerve? What muscles would be weak in it?
- Superior Gluteal Nerve
- Gluteus medius and gluteus minimus
**pelvis drops on side opposite of injury**
Where do you give intragluteal injections?
First finger on asis, spread fingers and give shot in between first two fingers.
Where do you inject to give an Anesthetic Block of Sciatic Nerve?
a few centimeters inferior to the midpoint of the junction of the PSIS and superior part of greater trochanter.
Injury of the Sciatic Nerve in the gluteal region can be due to what? (3)
compression of piriformis
spasm of piriformis
Complete or incomplete sections of sciatic nerve.
