ORGINS/INSERTIONS/ACTIONS Flashcards
GLUTEUS MAXIMUS
Origin:
-Between posterior gluteal line and iliac crest
-Dorsal surface of sacrum and coccyx
-Sacrotuberous ligament
Insertion:
-Iliotibial tract (IT band)
-Gluteal tuberosity
Action:
-EXTENDS HIP
-LATERALLY ROTATES HIP
-Abducts/adducts hip
GLUTEUS MEDIUS
Origin:
-Between posterior and anterior gluteal line
Insertion:
-Lateral aspect of greater trochanter
Action:
-ABDUCTS HIP
-MEDIALLY ROTATES HIP
-Flexes/extends hip
-Laterally rotates hip
GLUTEUS MINIMUS
(cannot palpate!!)
Origin:
-Between anterior and inferior gluteal lines
Insertions:
-Anterior aspect of the greater trochanter
Actions:
-ABDUCTS HIP
-MEDIALLY ROTATES HIP
-Flexes hip
TENSOR FASCIA LATAE
Origin:
-Lateral aspect ASIS
Insertion:
-Iliotibial tract (IT band)
Actions:
-ABDUCTS HIP
-MEDIALLY ROTATES HIP
-FLEXES HIP
PIRIFORMIS
Origin:
-Anterior surface between sacrum between 2nd + 4th sacral foramen
Insertion:
-Superior border greater trochanter
Action:
-Laterally rotates extended high
-Abducts flexed hip
-Stabilizes hip
OBTURATOR EXTERNUS
Origin:
-ramus of pubis and ischium obturator membrane
Insertion:
-trochanteric fossa
Action:
-Laterally rotates hip
OBTURATOR INTERNUS
Origin:
-Pelvic surface of obturator membrane + adjacent bones
Insertion:
-Medial surface of greater trochanter
Action:
-Laterally rotate extended thigh
-Abduct flexed thigh
-Stabilize hip
Superior gemellus
Origin:
-Ischial spine
Insertion:
-Blends in w/ obturator internus (medial surface of greater trochanter)
Action:
-Laterally rotate extended thigh
-Abduct flexed thigh
-Stabilize hip
INFERIOR GEMELLUS
Origin:
-Superior aspect ischial tuberosity
Insertion:-Blends in w/ obturator internus (medial surface of greater trochanter)
Action:
-Laterally rotate extended thigh
-Abduct flexed thigh
-Stabilize hip
QUADRATE FEMORIS
Origin:
-Lateral aspect of ischial tuberosity
Insertion:
-Quadrate tubercle + adjacent inferior bones
Action:
-Laterally rotates thigh
-Stabilizes hipxxygr
BICEPS FEMORIS
Origin:
-Long head = ischial tuberosity
-Short head = lateral lip of linea aspera
Insertion:
-Head of fibula and lateral condyle of tibia
Action:
-Extends the hip (LH)
-Laterally rotates extended hip (LH)
-Flexes knee (LH + SH)
-With flexed knee, laterally rotates the bottom portion of the leg (LH + SH)
Semimembranosus
Origin
-Ischial tuberosity
Insertion:
-Posterior superior aspect of medial condyle of tibia
Actions:
-Extends hip
-With hip extended it medially rotates the thigh
-Flexes knee
-With the knee flexed it medially rotates the lower leg
Semitendinosus
Origin:
-Ischial tuberosity
Insertion:
-Anterior medial aspect proximal end of tibia
Action:
-Extends hip
-With hip extended it medially rotates the thigh
-Flexes knee
-With the knee flexed it medially rotates the lower leg
Iliacus
Origin:
-Iliac crest, iliac fossa, ala of sacrum, anterior sacroiliac ligament
Insertion:
-Tendon of psoas major/minor
-Lesser trochanter
Action:
-Fixed pelvis = flexes hip
-Fixed thigh = flexes trunk
Psoas major/minor
Origin:
-Body of T12-L5 vertebrae
-Transverse process of L1-5
-Intervertebral discs
Insertion:
-Lesser trochanter
Action:
-Fixed pelvis = flexes hip
-Fixed thigh = flexes trunk
RECTUS FEMORIS
Origin:
-AIIS
-Rim of acetabulum
Insertion:
-Base of patella
-Tibial tuberosity via patellar ligament
Action:
-Flexes thigh
-Extends leg
VASTUS MEDIALIS
Origin:
-Medial lip of linea aspera
-Intertrochanteric line
Insertion:
-Medial border of patella
-Tibial tuberosity via patellar ligament
Action:
-Extends leg
VASTUS LATERALIS
Origin:
-Lateral lip of linea aspera
-Greater trochanter
Insertion:
-Lateral border of patella
-Tibial tuberosity via patellar ligament
Action:
-Extension of leg
VASTUS INTERMEDIUS
Origin:
-Anterior/lateral surface of upper 2/3 shaft of femur
Insertion:
-Lateral border of patella, tibial tuberosity via patellar ligament
Action:
-Extends leg
SARTORIUS
Origin:
-ASIS
Insertion:
-Anteromedial aspect proximal end shaft of tibia
Action:
-Flexes hip + knee
-Laterally rotates thigh
-Abducts thighs
PECTINEUS
Origin:
-Pectineal line of the superior ramus of pubis
Insertion:
-Pectineal line of femur
Action:
-Flexes + adducts thigh
ADDUCTOR LONGUS
Origin:
-Between pubic crest and symphysis
Insertion:
-Medial lip of linea aspera
Action:
-Adducts thigh
ADDUCTOR BREVIS
Origin:
-External surface boy + inferior ramus of the pubis
Insertion:
-Pectineal line, trochanter proximal end of linea aspera
Action:
-Adducts thigh
ADDUCTOR MAGNUS
Origin:
-Adductor: inferior ramus of ischium +pubis
-Hamstring: Lower part of ischial tuberosity
Insertion:
-Adductor: Gluteal tuberosity, linea aspera and supracondylar ridge
-Hamstring: adductor tubercle
Action:
-Adductor: Adducts and flexes thigh
-Hamstring: Extends thigh
GRACILIS
Origin:
-Lower medial margin of body + inferior ramus of pubis
-Adjacent inferior ramus of ischium
Insertion:
-Anteromedial aspect proximal end of shaft of tibia
Action:
-Adducts thigh
-Flexes leg at knee
-Medially rotates thigh
