Tensor fasciae latae (includes IT band)
PA: outer surface of ant. iliac crest between
tubercle of iliac crest and ASIS
DA: IT band (ant. surface of lateral condyle of tibia)
Innervation: sup. gluteal nerve (L4-S1)
Blood: sup. gluteal artery from int. iliac artery
Fxn: assists with IR, abduction, flexion of thigh at
hip and extension of leg at knee
Popliteus
PA: middle of 3 facets of lateral surface of lateral
condyle of femur
DA: medial 2/3 of triangular area above soleal line
on post surface of tibia
Innervation: tibial nerve (L4-S1)
Blood: popliteal artery
Fxn: ER, flexion of femur at knee
Plantaris
PA: lateral supracondylar ridge of femur
DA: medial aspect of post surface of calcaneus
Innervation: tibial nerve (S1-2)
Blood: popliteal artery
Fxn: assist with flexion of leg at knee, plantar
flexion of foot at ankle
Gastrocnemius
PA: medial head: upper and post part of medial
condyle of femur behind adductor tubercle to popliteal surface of femur
lateral head: lat surface of lateral condyle of femur and lower
part of supracondylar line
DA: middle of 3 facets on posterior surface of calcaneus
Innervation: tibial nerve (S1-2)
Blood: posterior tibial and popliteal arteries
Fxn: plantarflexion of foot at ankle; assists with
flexion of leg at knee
Adductor Magnus: anterior part
PA: inferior pubic ramus and ramus of ischium
DA: medial margin of gluteal tuberosity of femur,
medial to glute max
Innervation: posterior division of obturator nerve (L2-4)
Blood: femoral artery
Fxn: adduction of thigh at hip, assists with IR of
thigh at hip
Gracilis
PA: lower half of body of pubis, inferior pubic
ramus, ischial ramus
DA: upper part of med flare of tibia, below medial condyle
Innervation: ant. division of obturator nerve (L2-3)
Blood: obturator artery from internal iliac artery
Fxn: assists with flexion, IR of knee
Sartorius
PA: inf portion of ASIS
DA: upper medial surface of tibial shaft at tibial flare
Innervation: ant. division of femoral nerve (L3-4)
Blood: femoral artery
Fxn: assists with flexion, ER, abduction of thigh at
hip; flexion of knee
Adductor magnus: posterior part
PA: inferolateral aspect of ischial tuberosity
DA: linea aspera and prox part of med supracondylar
line and by small rounded tendon to adductor tubercle
Innervation: tibial portion of sciatic nerve (L4-S3)
Blood: femoral artery
Fxn: adduction, extension of thigh at hip
Biceps femoris: long head
PA: upper and inner surface of posterior side of
ischial tuberosity conjoined with semitendinosus
DA: styloid process of fibula to form semicircle
around LCL. splits into 3 laminae: intermediate fuses with lateral fib
collateral ligament and the other pass superficial and deep to the
ligament to attach to lat condyle of tibia
Innervation: tibial portion of sciatic nerve (L5-S1)
Blood: internal iliac, popliteal, profunda femoris arteries
Fxn: flexion, ER of leg at knee; extension of thigh
at hip
Biceps femoris: short head
PA: middle third of linea aspera, lateral to
supracondylar ridge of femur
DA: styloid process of fibula to form semicircle
around LCL. splits into 3 laminae: intermediate fuses with lateral fib
collateral ligament and the other pass superficial and deep to the
ligament to attach to lat condyle of tibia
Innervation: common peroneal portion of sciatic nerve (L5-S1)
Blood: internal iliac, popliteal, profunda femoris arteries
Fxn: flexion, ER of leg at knee
Vastus Intermedius
PA: ant/lat aspects of upper 2/3 of femoral shaft and
lower part of lat intermuscular septum of femur
DA: into quad tendon along with rectus femoris and
other vasti muscles, enveloping the patella, then by patellar ligament
into tib tub
Innervation: post division of femoral nerve (L3-4)
Blood: femoral artery and branches from profunda
femoris artery
Fxn: extension of leg at knee
Vastus lateralis
PA: upper aspec of intertrochanteric line, base of
greater trochanter and onto ant surface, from the proximal portion of
the lat lip of linea aspera, lateral supracondylar ridge and lateral
intermuscular septum
DA: into quad tendon along with rectus femoris and
other vasti muscles, enveloping the patella, then by patellar ligament
into tib tub
Innervation: post division of femoral nerve (L3-4)
Blood: branches from profunda femoris artery
Fxn: extension of leg at knee
Vastus medialis
PA: lower part of intertrochanteric line, along
spiral line to medial lip of linea aspera, medial intermuscular septum
and aponeurosis of adductor magnus
DA: into quad tendon along with rectus femoris and
other vasti muscles, enveloping the patella, then by patellar ligament
into tib tub
Innervation: post division of femoral nerve (L3-4)
Blood: femoral artery and branches from profunda
femoris artery
Fxn: extension of leg at knee
Rectus femoris
PA: straight head: from ant inf iliac spine
reflected head: curved line along upper part of acetabulum at ilium
DA: into quad tendon along with three vasti muscles,
enveloping the patella, then by patellar ligament into tib tub
Innervation: post division of femoral nerve (L3-4)
Blood: femoral artery and branches from profunda
femoris artery
Fxn: extension of leg at knee; assists with flexion
of thigh at hip