Unit 5: Lower Extremity Muscles (Hip and Thigh) Flashcards
Action:
-With the origin fixed, flex the hip
-With the insertion fixed, flex the trunk toward the thigh
-With the insertion fixed, tilt pelvis anteriorly
Origin:
-bodies and transverse processes of lumbar vertebrae
Insertion:
-Lesser trochanter
psoas major
Action:
-Assist to create lordotic curvature in the lumbar spine
-Tilt pelvis posteriorly
Origin:
-Body and transverse process of first lumbar vertebra
Insertion:
-Superior ramus of pubis
psoas minor
Action:
-With the origin fixed, flex the hip
-With the insertion fixed, flex the trunk toward the thigh
-With the insertion fixed, tilt pelvis posteriorly
Origin:
-iliac fossa
Insertion:
-lesser trochanter
iliacus
Action:
-Flex the hip
-Medially rotate the hip
-Abduct the hip
Origin:
-Iliac crest, posterior to the ASIS
Insertion:
-Iliotibial tract
tensor fasciae latae
Action:
-Flex the hip
-Laterally rotate the hip
-Abduct the hip
-Flex the knee
-Medially rotate the flexed knee
Origin:
-Anterior superior iliac spine
Insertion:
-Proximal, medial shaft of the tibia at per anserinus tendon
sartorius
Action:
-All fibers extend, laterally rotate, and abduct the hip
-Lower fibers adduct the hip
Origin:
-Coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments
Insertion:
-Iliotibial tract and gluteal tuberosity
gluteus maximus
Action:
-All fibers abduct the hip
-Anterior fibers flex and medially rotate the hip
-Posterior fibers extend and laterally rotate the hip
Origin:
-Gluteal surface of ilium, between posterior and anterior gluteal lines, just below the iliac crest
Insertion:
-Lateral aspect of greater trochanter
gluteus medius
Action:
-Abduct the hip
-Medially rotate the hip
-Flex the hip
Origin:
-Gluteal surface of the ilium between the anterior and inferior gluteal lines
Insertion:
-Anterior aspect of greater trochanter
gluteus minimus
Action:
-Laterally rotate the hip
-Abduct the hip when the hip is flexed
Origin:
-Anterior surface of sacrum
Insertion:
-Superior aspect of greater trochanter
piriformis
Action:
-Laterally rotate the hip
Origin:
-Lateral border of ischial tuberosity
Insertion:
-Intertrochanteric crest, between the greater and lesser trochanters
quadratus femoris
Action:
-Laterally rotate the hip
Origin:
-Obturator membrane and inferior surface of obturator foramen
Insertion:
-Medial surface of greater trochanter
obturator internus
Action:
-Laterally rotate the hip
Origin:
-Rami of pubis and ischium, obturator membrane
Insertion:
-Trochanteric fossa of femur
obturator externus
Action:
-Laterally rotate the hip
Origin:
-Ischial tuberosity
Insertion:
-Medial surface of greater trochanter
gemellus superior
Action:
-Laterally rotate the hip
Origin:
-Ischial tuberosity
Insertion:
-Medial surface of greater trochanter
gemellus inferior
Action:
-Adduct the hip
-Medially rotate the hip
-posterior fibers extend the hip
Origin:
-Inferior ramus of the pubis, ramus of ischium and ischial tuberosity
Insertion:
-Medial lip of linea aspera and adductor tubercle
adductor magnus
Action:
-adduct the hip
-medially rotate the hip
Origin:
-Superior ramus of pubis
Insertion:
-Pectineal line of femur
pectineus
Action:
-adduct the hip
-medially rotate the hip
-flex the knee
-medially rotate the flexed knee
Origin:
-inferior ramus of pubis
Insertion:
-proximal, medial shaft of tibia at pet anserinus tendon
gracilis
Action:
-Adduct the hip
-Medially rotate the hip
Origin:
-Pubic tubercle
Insertion:
-Medial lip of linea aspera
adductor longus
Action:
-Adduct the hip
-Medially rotate the hip
Origin:
-Inferior ramus of pubis
Insertion:
-Pectineal line and medial lip of linea aspera
adductor brevis
Action:
-Flex the knee
-Laterally rotate the flexed knee
-Long head: extend the hip
-Tilt pelvis posteriorly
Origin:
-Long head, ischial tuberosity
-Short head, lateral lip of linea aspera
Insertion:
-Head of the fibula
biceps femoris
Action:
-flex the knee
-medially rotate the flexed knee
-extend the hip
-tilt pelvis posteriorly
Origin:
-Ischial tuberosity
Insertion:
-Proximal, medial shaft of the tibia at per anserinus tendon
semitendinosus
Action:
-Flex the knee
-Medially rotate the flexed knee
-Extend the hip
-Tilt the pelvis posteriorly
Origin:
-Ischial tuberosity
Insertion:
-Posterior aspect of medial condyle of tibia
semimembranosus
Action:
-Extend the knee
-Flex the hip
Origin:
-Anterior inferior iliac spine
Insertion:
-Tibial tuberosity
rectus femoris
Action:
-Extend the knee
Origin:
-Anterior and lateral shaft of the femur
Insertion:
-Tibial tuberosity
vastus intermedius
Action:
-Extend the knee
Origin:
-Lateral lip of linea aspera, gluteal tuberosity and greater trochanter
Insertion:
-Tibial tuberosity
vastus lateralis
Action:
-Extend the knee
Origin:
-Medial lip of linea aspera
Insertion:
-Tibial tuberosity
vastus medialis
