Muscles Of Gluteal Region Flashcards
Innervation of gluteal Maximus
Inferior gluteal nerve
A branch of the sacral plexus
Origin of the gluteus Maximus
Dorsal surface of sacrum and coccyx
Sacrotuberous ligament
Ilium , posterior to posterior gluteal line
Distal attachment of gluteus Maximus
Most fibers end in the illiotibial tract
Some fibers insert on the gluteal tuberosity.
Actions of gluteus Maximus
Extends thighs
Laterally rotates thigh
Assists in rising from sitting position
Origin of gluteal medius
External surface of ilium
Between the anterior and posterior gluteal lines
Insertion of gluteus medius
Lateral surface of greater trochanter of femur
Innervation
Superior gluteal nerves
(L5,S1)
Action of gluteus medius
Abducts and medially rotates tigh
Origin of gluteus minimus
External surface of ilium
Between the anterior and inferior gluteal lines
Insertion of gluteus minimus
Anterior surface of greater trochanter
Innervation
Superior gluteal nerve (S5,l1
Functions of gluteus minimus
Abducts and medially rotates thigh
Origin of tensor fascia latae
Anterior superior iliac spine
Anterior part of iliac crest
Distal attachment of tensor fascia latae
Iliotibial tract, which attaches to lateral condyle of tibia
Innervation of tensor fascia latae
Superior gluteal nerve
Functions of tensor fascia latae
Medial rotation of the thigh
Ebducts thigh
What are the superficial muscles of the gluteal region
Gluteus Maximus
Gluteus medius
Gluteus minimus
Tensor fascia latae
Deep muscles of the gluteal region
Piriformis
Obturator internus
Superior and inferior gemelli
Quadratus femoris
Proximal attachment of piriformis
Anterior surface of sacrum
Sacrotuberous ligament
Insertion of piriformis
Superior border of greater trochanter of femur
Innervation of piriformis
Branches of interior rami of S1 , S2
Proximal attachment of obturator internus
Pelvic surface of obturator membrane and surrounding bones
Distal attachment of obturator internus
Medial surface of greater trochanter of femur
Innervation of obturator internus
Nerve to obturator internus (L5,S1)
Origin of superior and inferior gemelli
Superior ischial spine
Inferior ischial tuberosity
Insertion
Medial surface of greater trochanter of femur
Nerves of superior and inferior gemelli
Superior. Nerve to obturator internus
Inferior gemelli: nerve to quadratus femoris
Origin of quadratus femoris
Lateral border of ischial tuberosity
Insertion of quadratus femoris
Quadrate tubercle on intertrochanteric crest of femur and area inferior to it
Innervation of quadratus femoris
Nerve to quadratus femoris
The gluteal Maximus is supplied by what
The superior and inferior gluteal arteries
What muscle is the strongest hip extensor
The gluteus Maximus
Actions of gluteus Maximus
Extension and lateral rotation of the hip
What are bursas
They are membranous sacs lined by a Synnovial membrane. Containing a capillary layer of slippery fluid
Gluteal bursae
It seperates the gluteus Maximus from adjacent structures
Bursae associated with the gluteus Maximus
Trochanteric bursa
Ischial bursa
Gluteofemoral bursa
Functions of the trochanteric bursa
It separates superior fibers of the gluteus maximus from the greater trochanter
Ischial bursa
Separates the inferior border of the glute Maximus from the ischial tuberosity
Functions of gluteofemoral bursa
Separates the illiotibial tract from the superior part of proximal attachment of the vastus lateralis
Ischial tuberosity
Can be felt on deep palpating through the inferior part of the muscle
Just superior to the medial part of the gluteal fold
Ischial tuberosity
Can be felt on deep palpating through the inferior part of the muscle
Just superior to the medial part of the gluteal fold
Do you sit on your gluteus Maximus
No
Where do you sit
You sit on the fatty fibrous tissue, and ischial bursa that lies between the ischial tuberosity and skin
At what angle does the gluteus Maximus slope
It slopes at 45 degrees from the pelvis to the buttocks
How does the inferior gluteal nerve and vessel enter the gluteus Maximus
They enter the deep surface of the muscle through the center
Blood supply of the gluteus Maximus
Superior and inferior gluteal artery
Where does the sciatic nerve pass
It passes deep to the gluteus Maximus
Actions of gluteus Maximus
Lateral rotation
Extension of the thigh
Attachment of the illiotibial tract to the femur
It attaches via inter muscular septum
Shape of the gluteus Maximus and medius
Fan shaped
Arterial supply of gluteus minimus and medius
Superior gluteal nerve
Functions of gluteus Medius and minimus
Abduction
Medial rotation
Shape of the tensor fascia latae
It is a fusiform muscle
Location of the tensor fascia latae
It is about 15cm long
It is enclosed between 2 layers of fascia latae
To produce flexion, the tensor fascia latae acts with what other muscles
Illiopsoas
Rectus femoris
Piriformis shape
It is pear shaped
How does the piriformis leave the pelvis
It leaves through the greater sciatic foremen
Landmark of the gluteal region
Piriformis
Which muscles form the triceps coaxe or tricipital
The obturator internus
Superior and inferior gemelli
Where does the common tendon of the triceps coxae lie
It lies horizontally in the buttocks as it passes through the greater trochanter of the femur
How does the obturator internus leave the femur
It leaves the femur through the lesser sciatic foramen
Quadratus femoris
It is a short flat quadrangular muscle
Located inferior to the obturator internus and gemelli
It is a strong lateral rotator of the thigh
