Lower Limb Muscles Flashcards
Gluteus maximus
O = ileum posterior to the posterior gluteal line, dorsal sacrum
I = iliotibial tract
I = inferior gluteal nerve
Gluteus medius
O = external surface of ileum between anterior and posterior gluteal lines
I = lateral surface of GT
I = superior gluteal nerve
Gluteus minimis
O = External surface of ileum between anterior and posterior gluteal lines
I = anterior surface of GT
I = superior gluteal nerve
TFL
O = ASIS, anterior iliac crest
I = Iliotibial tract
I = superior gluteal nerve
Piriformis
O = anterior surface of sacrum, sacrotuberous ligament
I = superior border of GT
I = branches of anterior rami of S1/2
Obturator internus
O = pelvis surface of obturator membrane and surrounding bones
I = medial surface of GT
I = nerve to obturator internus
Superior gemelli
O = ischial spine
I = medial surface of GT (trochanteric fossa)
I = nerve to obturator internus
Inferior gemelli
O = ischial tuberosity
I = medial surface of GT (trochanteric fossa)
I = nerve to quadratus femoris
Quadratus femoris
O = lateral border of ischial tuberosity
I = quadrate tubercle on lesser trochanteric crest
I = nerve to quadratus femoris
Pectineus
O = superior ramus of pubis
I = pectineal line of femur
I = femoral nerve
Psoas major
O = sides of T12-L5 transverse processes
I = lesser trochanter
I = anterior rami of L1-3
Psoas minor
O = sides of T12-L1
I = pectineal line, iliopectineal eminence
I = anterior rami of L1-2
Iliacus
O = iliac crest
I = tendon of psoas major, lesser trochanter
I = femoral nerve
Sartorius
O = ASIS
I = superior part of medial surface of tibia (pes ansinus)
I = femoral nerve
Rectus femoris
O = ASIS and ileum superior to acetabulum
I = quads tendon
I = femoral nerve
Vastus lateralis
O = GT and lateral linea aspera
I = quads tendon
I = femoral nerve
Vastus medialis
O = intertrochanteric line and medial linea aspera
I = quads tendon
I = femoral nerve
Vastus intermedius
O = anterior and lateral surfaces of femoral shaft
I = quads tendon
I = femoral nerve
Semitendinosus
O = ischial tuberosity
I = medial surface of superior tibia (pes anserinus)
I = tibial division of sciatic nerve
Semimembranosus
O = ischial tuberosity
I = posterior part of medial condyle of tibia
I = tibial division of sciatic nerve
Biceps femoris
O = long head - ischial tuberosity, short head - linea aspera
I = lateral side of head of the fibula
I = sciatic nerve
Adductor longus
O = body of pubis
I = middle 1/3rd linea aspera
I = anterior division of obturator
Adductor brevis
O = body and inferior ramus of pubis
I = pectineal line and proximal part of linea aspera
I = anterior division of obturator
Adductor magnus
O = adductor part - inferior ramus of pubis, hamstring part - ischial tuberosity
I = adductor part - linea aspera, hamstring part - adductor tubercle of femur
I = adductor part - posterior division of obturator, hamstring part - sciatic
Gracilis
O = body/inferior ramus of pubis
I = superior part of medial surface of tibia (pes anserinus)
I = obturator nerve
Obturator externus
O = margins of obturator foramen
I = trochanteric fossa
I = obturator nerve
Tibialis anterior
O = lateral condyle and superior surface of tibia
I = medial cuneiform and base of 1st met
I = deep peroneal nerve
EDL
O = lateral condyle of tibial and superior 3/4 of medial surface of fibula
I = middle and distal phalanges of lateral 4 digits
I = deep peroneal nerve
EHL
O = middle part of anterior surface of fibula and IO membrane
I = dorsal aspect of base of distal phalanx of hallux
I = deep peroneal nerve
Peroneus tertius
O = inferior 1/3rd of anterior surface of fibula
I = base of 5th met
I = deep peroneal nerve
Peroneus longus
O = head of lateral fibula
I = base of 1st met and medial cuneiform
I = superficial peroneal nerve
Peroneus brevis
O = inferior 2/3rd of lateral fibula
I = 5th met
I = superficial peroneal nerve
Gastrocnemius
O = lateral femoral condyle and popliteal surface of femur (superior to medial condyle)
I = calcaneal tendon
I = tibial nerve
Soleus
O = posterior aspect of fibula head, soleal line
I = calcaneal tendon
I = tibial nerve
Plantaris
O = inferior end of lateral supracondylar line of femur
I = calcaneal tendon
I = tibial nerve
Popliteus
O = lateral surface of femoral condyle
I = posterior surface of tibia
I = tibial nerve
FHL
O = inferior 2/3rd posterior surface of fibula
I = base of distal phalanx of great toe
I = tibial nerve
FDL
O = medial part of posterior surface of tibia
I = base of distal phalanges of lateral 4 digits
I = tibial nerve
Tibialis posterior
O = IO membrane, posterior surface of tibia and fibula
I = tuberosity of navicular
I = tibial nerve
