Muscles of Gluteal Region and posterior thigh muscles Flashcards
distal attachment of the gluteus maximus
lateral condyle via iliotibial tract
gluteal tuberosity of femur
Gluteus Maximus Proximal Attachment
Illium posterior to posterior gluteal line; dorsal surface of sacrum and coocyx; and sacrotuberous ligament
innervation of gluteus maximus
inferior gluteal nerves (L5, S1,S2)
action of gluteus maximus
extends hip joint between flexed and standing posistions
lateral rotation
steadies thigh
rise from sitting position
gluteus medius proximal attatchment
exterior ilium between anterior and posterior gluteal lines
gluteus medius distal attachment
lateral surface of greater trochanter
gluteus medius innervation
superior gluteal nerves (L4, L5, S1)
gluteus medius action
abduct
medial rotation
keep pelvis in place when opposite limb elevated
gluteus minimis proximal attachment
external surface of ilium between anterior and inferior gluteal lines
gluteus minimis distal attachment
anterior surface of greater trochanter
innervation of gluteus minimis
superior gluteal nerves (L4, L5, S1)
gluteus minimis action
abducts
medially rotates
keep pelvis in place when opposite leg elevated
tensor fascia latae proximal attachment
asis
anterior part of iliac crest
tensor fascia latae distal attachment
iliotibial tract to lateral condyle of tibia
lateral epicondyle aka
gerdy tubercle
innervation of tensor fascia latae
superior gluteal nerve (L4,L5,S1)
piriformis passes through what
greater sciatic foramen
piriformis proximal attachment
anterior surface of sacrum 2-4
superior margin of greater sciatic notch
sacrotuberous ligament
piriformis distal attachment
superior border of greater trochanter
innervation of piriformis
branches of anterior rami of S1 and S2
action of tensor fascia latae
flexes hip
stabilizes extended knee
action of piriformis
laterally rotates extended hip joint
abduct flexed hip joint
steady femoral head in acetabulum
obturator internus passes through what
lesser sciatic foramen
obturator internus proximal attachment
pelvic surface of ilium and ischium
obturator membrane
obturator internus distal attachment
medial surface of greater trochanter
innervation of obturator internus
nerve to obturator internis (L5, S1)
action of obturator inturnus
laterally rotates extended hip joint
abduct flexed hip joint
steady femoral head in acetabulum
gemelli superior and inferior proximal attachments
superior- ischial spine
inferior- ischial tuberosity
gemeli superior and inferior distal attachment
medial surface of greater trochanter
innervation of gemelli superior and inferior
superior - nerve to obturator internus (L5, S1)
inferior - nerve to quadratus femoris ( L5,S1)
action of gemelli superior and inferior
laterally rotates extended hip joint
abduct flexed hip joint
steady femoral head in acetabulum
quadratus femoris proximal attachment
lateral border of ischial tuberosity
quadratus femoris distal attachment
quadrate tubercle and intertrochantric crest and area inferior to it
innervation of quadratus femoris
nerve to quadratus femoris (L5, S1)
action of quadratus femoris
laterally rotates
holds femoral head in
Semitendinosus proximal attachment
ischial tuberosity
semitendinosus distal attachment
medial surface of superior part of tibia
inervation of semitendinosus
tibial division of sciatic nerve (L5, S1, S2)
Semitendinosus action
Extend hip joint flex knee joint and rotate the leg medially when knee is flexed
when hip and knee are flexed, can extend trunk
semimembranosus proximal attachment
ischial tuberosity
Semimembranosus distal attachment
Posterior part of medial condyle of tibia reflected attachment forms oblique popliteal ligament
Innervation of semimembranosus
Tibial division of sciatic nerve (L5,S1,S2)
Action of semimembranosus
Extends hip joint flex knee joint and rotate the leg medially when knee is flexed
when hip and knee are flexed can extend trunk
Biceps femoris long and short heads proximal attachment
Long head; ischial tuberosity
Short head; linea aspera and lateral supracondylar line of femur
Distal attachment of biceps femoris long and short heads
Lateral side of head of fibula fibers are split at this site by fibular collateral ligament of knee
Innervation of biceps femoris long and short heads
long head: Tibial division of sciatic nerve (L5, S1,S2)
Short head: common fibular division of sciatic nerve L5 S1 S2
The action of biceps femoris long head and short head
Flexes knee joint and rotates it laterally When knee is flexed extends hip joint
who is the greatest ever
Rick!
