Transcript Dr. D`s Gluteal Lecture

Gluteal Region/ Post Thigh
MF Dauzvardis, Nov. 2010
OBTURATOR INTERNUS
ORIGIN
Inner surface of obturator membrane and rim of pubis and ischium bordering membrane
INSERTION
Middle part of medial aspect of greater trochanter of femur
ACTION
laterally rotates and stabilizes hip
NERVE
Nerve to obturator internus (L5, S1,2)
GEMELLUS SUPERIOR
ORIGIN
Spine of ischium
INSERTION
Middle part of medial aspect of greater trochanter of femur
ACTION
laterally rotates and stabilizes hip
NERVE
Nerve to obturator internus (L5, S1, 2)
GEMELLUS INFERIOR
ORIGIN
Upper border of ischial tuberosity
INSERTION
Middle part of medial aspect of greater trochanter of femur
ACTION
laterally rotates and stabilizes hip
NERVE
Nerve to quadratus femoris (L4, 5, S1)
Sacrotuberous Ligament
Sacrospinous Ligament
PIRIFORMIS
ORIGIN
2, 3, 4 costotransverse bars of anterior sacrum, few fibers from superior border of
greater sciatic notch
INSERTION
Anterior part of medial aspect of greater trochanter of femur
ACTION
laterally rotates and stabilizes hip
NERVE
Anterior primary rami of S1, 2
GLUTEUS MINIMUS
ORIGIN
Outer surface of ilium between middle and inferior gluteal lines
INSERTION
Anterior surface of greater trochanter of femur
ACTION
Abducts and medially rotates hip. Tilts pelvis on walking.
NERVE
Superior gluteal nerve (L4, 5, S1)
GLUTEUS MEDIUS
ORIGIN
Outer surface of ilium between posterior and middle gluteal lines
INSERTION
Posterolateral surface of greater trocanter of femur
ACTION
Abducts and medially rotates hip. Tilts pelvis on walking
NERVE
Superior gluteal nerve (L4,5,S1)
QUADRATUS FEMORIS
ORIGIN
Lateral border of ischial tuberosity
INSERTION
Quadrate tubercle of femur and a vertical line below this to the level of lesser trocanter
ACTION
laterally rotates and stabilizes hip
NERVE
Nerve to quadratus femoris (and obturator internus) (L4, 5, S1)
Gluteus Maximus
TENSOR FASCIA LATA
ORIGIN
Outer surface of anterior iliac crest between tubercle of the iliac crest and
anterior superior iliac spine
INSERTION
Iliotibial tract (anterior surface of lateral condyle of tibia)
ACTION
Maintains knee extended (assists gluteus maximus) and abducts hip
NERVE
Superior gluteal nerve (L4, 5, S1)
Lumen Learnem
Lumen Learnem
The cruciate anastomosis is an anastomosis in the upper thigh of the
inferior gluteal artery, the lateral and medial circumflex femoral arteries,
and the first perforating artery of the profunda femoris artery. The first
perforating artery is the artery that provides blood to the cruciate
anastomosis. The cruciate anastomosis is clinically relevent because if
there is a blockage between the femoral artery and external iliac artery,
blood can reach the the popliteal artery by means of the anastomosis.
The route of blood is through the internal iliac, to the inferior gluteal
artery, to a perforating branch of the deep femoral artery, to the lateral
circumflex femoral artery, then to its descending branch into the superior
lateral genicular artery and thus into the popliteal artery.
Wikipedia