LL:2) The Gluteal Region and Posterior Thigh Flashcards
What 3 ridges does the posterior illium bear
Anterior, posterior, inferior gluteal lines
The posterior ilium and ischium bear two notches:
greater and lesser sciatic
how can you tell posterior from inferior side of femur
posterior has linea aspera, intertrochanteric crest, gluteal tuberosity
The intertrochanteric crest is a ridge of bone between the trochanters on the
_______ aspect of the femur.
posterior
The gluteal tuberosity lies just inferior to the trochanters on the ______ aspect of the femur. It is a site of muscle attachment.
posterior
list the superficial gluteal muscles
● Gluteus maximus
● Gluteus medius
● Gluteus minimus
● Tensor fascia latae
Describe gluteus maximus
-blood supply
-nervous
-insertion
-origin
-function
-Inferior gluteal and superior gluteal arteries
-Inferior gluteal nerve (L5-S2)
-Iliotibial tract, gluteal tuberosity of femur
-posterior parts of the posterior surface of the ilium, the sacrotuberous ligament and the sacrum
-extensor and lateral rotator hip
Describe gluteus medius
-blood supply
-nervous
-insertion
-origin
-function
-Deep branch of S gluteal artery, trochanteric anastomosis
-Superior gluteal nerve L4-S1
-greater trochanter
-Gluteal surface of ilium
-abduct and medially rotate hip
Describe gluteus minimus
-blood supply
-nervous
-insertion
-origin
-function
-Deep branch of S gluteal artery, trochanteric anastomosis
-Superior gluteal nerve L4-S1
-greater trochanter of femur
-Gluteal surface of ilium
-abduct and medially rotate hip
Tensor fascia latae is attached to the ____ and inserts into the _______ _____
ASIS
iliotibial band
What nerve innervated the tensor fascia latae
Superior gluteal nerve (L4-S1)
list the deep gluteal muscles
● Piriformis
● The superior and inferior gemelli
● Obturator internus
● Quadratus femoris
Describe Structures passing through the greater sciatic foramen inferior to piriformis muscle:
PIN&PINS
-Posterior cutaneous nerve of thigh
-Inferior gluteal vessels and nerves
-Nerve to quadratus femoris
- Pudendal nerve
- Internal pudendal vessels
- Nerve to obturator internus
-Sciatic nerve
Describe piriformis muscle
-blood supply
-nervous
-insertion
-origin
-function
-Superior +inferior gluteal artery, gemellar branches of the internal pudendal
-Nerve to piriformis (S1-S2)
-Greater trochanter of the femur
-Anterior surface of the sacrum
Describe Obturator Internus muscle
-blood
-nervous
-Obturator artery; internal pudendal artery
-Nerve to obturator internus (L5-S1)
what is the general function of the deep gluteal muscles
stabilise and laterally rotate the hip joint
List the muscles of the posterior thigh compatment
● semimembranosus
● semitendinosus
● biceps femoris (a long and a short head)
● hamstring part of adductor magnus
what is the general innervation of the posterior thigh muscles
sciatic nerve(L4-S3)
What are the functions of the posterior thigh compartments and innervation
semimembranosus - extension hip, flexion knee, tibial part of sciatic nerve
semitendinosus - extension hip, flexion knee, tibial part of sciatic nerve
Biceps femoris long head-extension hip, flexion knee, tibial part sciatic nerve
Biceps femoris short head - flexion knee, common fibular sciatic nerve
Hamstring adductor Magnus - extension hip, tibial sciatic
What are the gluteal arteries a branch of
internal illiac
what muscles border the Popliteal Fossa
Superomedial border – semimembranosus.
Superolateral border – biceps femoris.
Inferomedial border – medial head of the gastrocnemius.
Inferolateral border – lateral head of the gastrocnemius and plantaris.
what are the contents. of the popliteal fossa
popliteal vein + artery
Tibial nerve
common fibrillar nerve
where is sciatic pain felt
posterior thigh
what is the nerve root for sciatic nerve
L4-S3
What structures pass through the greater sciatic foramen?
- Piriformis muscles
-Sciatic nerve
-Superior and inferior gluteal arteries, veins and nerves
-Pudendal nerve
-Internal pudendal artery
What structures pass through the lesser sciatic foramen
-Pudendal nerve (into the perineum)
-internal pudendal artery (into the perineum)
-Tendon of obturator internus
at structures pass through the obturator canal?
obtruatoru vein, artery, nerve
what passes through the deep to the inguinal ligament
femoral vein, artery, nerve
Which vessel supplies the posterior compartment of the thigh?
vessels arriving from produndua femoris
Where do the posterior thigh muscles origionate
ischial tuberosity
