UNIT 20: MUSCULAR SYSTEM - MUSCLES OF THE HIP

movements of the hip

external rotation

internal rotation

extension

flexion

adduction

abduction

external rotation muscles of hip

piriformis

gemellus superior

gemellus inferior

obturator internus

obturator externus

quadratus femoris

sartorius

gluteus maximus

gluteus minimus (posterior fibers)

gluteus medius (posterior fibers)

iliopsoas

internal rotation muscles of hip

gluteus medius (anterior fibers)

gluteus minimus (anterior fibers)

tensor fascia latae

pectineus

adductor brevis

adductor longus

adductor magnus

gracilis

extension muscles of hip

gluteus maximus

biceps femoris

semitendinosus

semimembranosus

adductor magnus (posterior fibers)

flexion muscles of hip

ilopsoas

pectineus

tensor fascia latae

adductor brevis

adductor longus

rectus femoris

sartorius

abduction muscles of hip

gluteus medius

gluteus minimus

gluteus maximus

tensor fascia latae

sartorius

adduction muscles of hip

adductor brevis

adductor longus

adductor magnus

gracilis

pectineus

piriformus

origin: sacrum, ischium

insertion: greater trochanter

action: external rotation

gemellus superior

origin: spine of ischium

insertion: greater trochanter

action: external rotation

gemellus inferior

origin: ischial tuberosity

insertion: greater trochanter

action: external rotation

obturator internus

origin: posterior pubis, obturator foramen

insertion: greater trochanter

action: external rotation

obturator externus

origin: anterior pubis, obturator foramen

insertion: greater trochanter

action: external rotation

quadratus femoris

origin: ischial tuberosity

insertion: intertrochanteric crest

action: external rotation

gluteus maximus

origin: sacrum, iliac crest

insertion: gluteal tuberosity

action: extension, external rotation

iliotibial band (IT band)

action: knee extension

gluteus medius

origin: outer surface of ilium

insertion: greater trochanter

action: abduction, stabilize hip

gluteus minimus

origin: outer surface of ilium

insertion: greater trochanter

action: abduction

biceps femoris (hamstring)

origin:

long head - ischial tuberosity

short head - linea aspera

insertion: head of fibula, lateral condyle of tibia

action: extension, flexion of knee

semitendinosus (hamstring)

origin: ischial tuberosity

insertion: proximal anteromedial surface of tibia

action: extension, flexion of knee

semimembranosus (hamstring)

origin: ischial tuberosity

insertion: medial condyle of tibia (posterior)

action: extension, flexion of knee

iliopsoas

origin: lumbar vertebrae T12-L5, inner surface of ilium

insertion: lesser trochanter

action: flexion, abduction, external rotation

tensor fascia latae

origin: iliac crest

insertion: iliotibial tract (it band)

action: abduction, internal rotation, flexion, extension of knee

sartorius

origin: anterior superior iliac spine

insertion: proximal anteromedial surface of tibia

action: flexion, abduction, external rotation

rectus femoris

origin: anterior inferior iliac spine, ilium above acetabulum

insertion: patella

action: extension of knee, flexion

pectineus (most superior)

origin: superior ramus of pubis

insertion: lesser trochanter, linea aspera

action: flexion, adduction, internal rotation

adductor longus (most inferior)

origin: body of pubis

insertion: linea aspera

action: adduction, flexion, internal rotation

adductor brevis (middle)

origin: inferior ramus of pubis

insertion: linea aspera

action: adduction, flexion, internal rotation

adductor magnus (largest)

origin: inferior ramus of pubis, ischial tuberosity

insertion: linea aspera, adductor tubercle

action: adduction, flexion (anterior fibers), extension (posterior fibers)

gracilis

origin: body and inferior ramus of pubis

insertion: proximal anteromedial surface of tibia

action: adduction, flexion, internal rotation

what muscles are a part of the pes anserine?

semitendinosus

sartorius

gracilis