leg muscles Flashcards
actions of TFL & nerve
flexes
medially rotates
abducts hip
superior gluteal nerve
sartorius actions and nerve
flex, lateral rotation
FEMORAL
rectus femoris
AIIS
tibial tuberosity via common quadriceps tendon
extend knee
flex hip
femoral nerve
origin of vastus lateralis
proximal intertrochanteric line
anterior & inferior border greater trochanter
proximal 1/2 lateral lip linea aspera
gluteal tuberosity
origin of vastus medialis
distal 1/2 intertrochanteric line
medial lip linea aspera
adductor longus
ant surface of pubis at the crest and symphysis
middle 1/3 medial lip linea aspera
adduction and flex hip
obturator
adductor brevis
outer surface inferior ramus of pubis
distal 2/3 pectineal line
proximal 1/2 medial lip linea aspera
adduct and flex hip
obturator
origin of adductor magnus
inferior ramus of pubis
ramus of ischium
ischial tuberosity
insertion of adductor magnus
medial to gluteal tuberosity
middle of linea aspera
medial supracondylar line
adductor tubercle on medial condyle of femur
actions of adductor magnus
anterior fibres = adduct
posterior fibres = extend
OBTURATOR AND SCIATIC NERVE
Gracilis
inferior 1/2 pubic symphysis
medial margin inferior ramus of pubic bone
pes anserine
actions of gracilis
adduct hip
flex, medially rotate knee
biceps femoris origin
long head - ischial tuberosity, sacrotuberous ligament
short head - lateral lip linea aspera, proximal 2/3 lateral supracondylar line
biceps femoris insertion
lateral head of fibula
lateral tibia condyle
action and nerve bicep femoris
flex, laterally rotate knee
long head - lateral rotation of hip
long = tibial
short = peroneal
semimembranosus
ischial tuberosity
posteromedial aspect of medial condyle of tibia
(groove for semimembranosus)
flex and medially rotate knee
tibial
semitendinosus
ischial tuberosity
pes anserine
flex / medially rotate knee
extends, assist in medial rotation of hip
tibial
origin tibialis anterior
lateral condyle & proximal 1/2 lateral surface of tibia
insertion tibialis anterior
medial/plantar surface of medial cuneiform
base of 1st metatarsal bone
action and nerve tibialis anterior
flex and invert ankle joint
deep peroneal (fibular)
extensor digitorum longus origin and insertion
lateral condyle of tibia
proximal 3/4 ant surface body of fibula
dorsal surface digits 2-5
actions and nerve of extensor digitorum longus
extends MTP, IP joints of digits 2-5
assist in dorsiflexion and eversion
deep peroneal (fibular)
extensor hallicus longus
middle half of anterior surface of fibula
base of distal phalanx big toe
actions and nerve extensor hallucis longus
extend MTP & IP joint of big toe
assist in inversion of foot and dorsiflex ankle
deep peroneal (fibular)
fibularis tertius
distal 1/3 anterior shaft of fibula
base of 5th metatarsal - dorsal surface
dorsiflex ankle
evert foot
deep peroneal
which 2 muscles are innervated by superficial peroneal fibular nerve
fibularis (peroneus) brevis & longus
origin of fibularis longus
lateral condyle of tibia
lateral proximal 2/3 and head of fibula
fibularis longus insertion
lateral side base of 1st metatarsal
medial cuneiform bone
actions and nerve of fibularis longus
everts foot
plantar flexion of ankle joint
depress head of 1st metatarsal
superficial peroneal
fibularis brevis
distal 2/3 lateral surface of fibula
tuberosity of base of 5th metatarsal bone, lateral side
actions and nerve of fibularis brevis
evert foot
plantar flexion of ankle
superficial peroneal
gastrocnemius
medial and lateral condyles of femur
posterior surface of calcaneus
plantarflexion
tibial
plantaris
distal part lateral supracondylar line on femur
posterior calcaneus
plantar flexion
weak knee flexion
TIBIAL
soleus origin-
head of fibula posterior surface
proximal 1/3 fibula body
soleal line
middle of medial border of tibia
soleus insertion
w gastroc tendon into posterior calcaneus
