Hips Flashcards
Piriformis
O: Anterior surface of the sacrum, sacrotuberous ligament. Exits pelvis via greater sciatic foramen.
I: greater trochanter of the femur
A: lateral rotation, stabilization.
N: anterior rami of S1 primary also S2
Quadratus femoris
O: ischial tuberosity
I: quadrate tubercle on intertrochanteric crest
A: Lateral rotation stabilization
N: nerve to quadratus femoris (L5, S1)
Superior and Inferior Gamelli
O: Sup: ischial spine
Inf: ischial tuberosity
I: greater trochanter
A: Lateral rotation and stabilization
N: SUP: Nerve to the OI
INF: Neve to the quadrates femoris.
Obturator internus
O: internal surface of the obturator foramen and membrane
exits via lesser sciatic foramen
I: greater trochanter
A: Lateral rotation of hip, stabilization
N: nerve to the OI (L5, S1 primary)
Semitendinosus
O: Ischial Tuberosity
I: Medial surface of the superior part of the tibia
A: Flex knee, extend hip
N: tibial division of the sciatic nerve (L5 primary S1 primary, S2)
Semimembranosus
O: Ischial tuberosity
I: posterior medial surface of the tibia
A: Flex knee, extend hip
N; tibial division of the sciatic nerve (L5 primary S1 primary, S2)
Biceps Femoris
O: long: ischial tuberosity
Short: linea aspera and lateral supracondylar line
I: Lateral head of the fibula
A: Flex knee and extend hip (long only).
N: Long: Tibial division of of the sciatic nerve (L5, S1 Primary, S2)
Short: common fibular division of the sciatic nerve (L5, S1 Primary, S2)
Pes anserinus “Goose foot”
Say grace before tea
Sartorius, gracilis, semitendinosus
anserine bursa too
Pectineus
O: superior rams of the pubis
I: pectineal line
A: adduction medial rotation and flexion
N: Femoral nerve (L2 primary, L3)
Psoas Major
O: Sides of T12-L5 and discs,
I: Lesser trochanter of the femur
A: Flex thigh at hip and stabilize joint
N: Anterior rami of Lumbar nerves (L1 and L2 primary, L3)
Psoas Minor
O: T12-L1 vertebrae and discs
I: pectineal line and iliopectineal eminence
A: Flex thigh at hip and stabilize joint
N: anterior rami of lumbar nerves ( L1 L2)
iliacus
O: Iliac crest, iliac fossa, ala of sacrum, anterior sacroiliac ligaments.
I: tendon of the iliopsoas, lesser trochanter
A: Flex thigh at hip and stabilize joint
N: Femoral nerve(L2 primary L3)
Sartorius
O: ASIS and notch above it.
I: Superior part of medial surface of the tibia.
A: Flex, abduct and laterally rotate. Medial rotation when knee is flexed?
What is the common innervation of all of the Quadriceps?
Femoral nerve L2 L3 and L4 Primary
What is the origin of the rectus femoris?
ASIS and ilium superior to acetabulum
what is the origin of the Vastus lateralis?
Greater trochanter and lateral lip of the line aspera.
what is the origin of the Vastus medialis?
Intertrochanteric line and medial lip of the line aspera.
what is the origin of the Vastus medialis?
Intertrochanteric line
what is the origin of the vests intermedius?
anterior and lateral surface of the shaft of the femur
Adductor longus
O: Body of Pubis inferior to pubic crest
I: Middle 3rd of linea aspera
A: Adduction of hip
N: Obturator Nerve (L2, L3 primary, L4)
Adductor Magnus
O: adductor part: inferior rams of the pubis, rams of the ischium.
Hamstring part: ischial tuberosity
I: Adductor part: Gluteal tuberosity, linea aspera, medial supracondylar line.
Hamstring part: adductor tubercle of the femur
A: Adducts thigh together. Adductor part flexes thigh. Hamstring part extends thing.
N: Adductor part: obturator nerve L2, L3 and L4 Primary
Hamstring part: tibial part of sciatic nerve L4 primary.
Adductor Magnus
O: adductor part: inferior rams of the pubis, rams of the ischium.
Hamstring part: ischial tuberosity
I: Adductor part: Gluteal tuberosity, linea aspera, medial supracondylar line.
Hamstring part: adductor tubercle of the femur
Gracilis
O; body of inferior rams of pubis
I: superior part of medial surface of the tiba
A: adduction thigh, flexes knee, medially rotates leg
N: obturator nerve L2 primary L3
Obturator externa
O: margins of obturator foramen, and obturator membrane
I: Trochanteric fossa of femur
A: lateral rotation of thigh, stabilize head of femur
N: Obturator nerve L3, L4 primary
what do all medial thigh compartment muscles have in common?
all are innervated by Obturator nerve whch has contributions from L2-L4
Gluteus maximus
O: ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, sacrotuberous ligament.
I: Most fibers end in iliotibial tract, which connects to the lateral tibial condyle. some fiber insert into the gluteal tuberosity.
A: Hip extension, external rotation
N: inferior gluteal nerve L5, S1 primary, S2 primary
Gluteus medius
O: external surface of the ilium between anterior and posterior gluteal lines.
I: lateral surface of greater trochanter
A: Abduct medially rotate
N: L5 primary, S1
Gluteus Minimus
O: external surface of the ilium between anterior and inferior gluteal lines.
I: Anterior surface of greater trochanter
A: Abduct medially rotate
N: L5 primary, S1
Tensor Fasciae late
O: ASIS and iliac crest
I: Lateral condyle of the tibia via Iliotibial tract :
A: Abduct medially rotate
N: L5 primary, S1
Superior, inferior, medial clunial nerves
Cutaneous nerves of the butt.
(S1-S3)Inferior clunial nerve comes from ventral rami (sacral plexus) from posterior cutaneous nerve of the thigh. Inferior 1/3 of buttocks and gluteal fold.
Superior cunial nerve come from dorsal rami L1-L3. superior 2/3 of the buttocks.
Medial clunial nerve come from dorsal rami S1-S3. Skin around and on sacrum.
Posterior cutaneous nerve of the thigh
ddd
pudendal nerve
exits greater sciatic returns through the lesser sciatic. sensory information to external genitalia. Contribution S2-S4 somatomotor and somatosensory.
Sacroiliac joint
Part fibrous part synovial
weight bearing
posterior SI ligament
has both transverse and longitudinal fibers
Anterior SI ligaments
thickening of the joint capsule
Interosseous SI ligaments
deep to posterior SI ligaments.
