LL:2) The Gluteal Region and Posterior Thigh Flashcards
(30 cards)
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
