Muscles of the Lower Extremity Flashcards
adductor brevis origin
anterior surface of the inferior pubic ramus
adductor brevis insertion
proximal 1/3 of the linea aspera of the femur
adductor brevis innervation
obturator nerve
adductor longus origin
anterior surface of the body of the pubis
adductor longus insertion
middle 1/3 of the linea aspera of the femur
adductor longus innervation
obturator nerve
adductor magnus, anterior (adductor head) origin
ischial ramus
adductor magnus anterior (adductor head) insertion
entire linea aspera of the femur
adductor magnus, anterior (adductor head) innervation
obturator nerve
adductor magnus posterior (extensor head) origin
ischial tuberosity
adductor magnus posterior (extensor head) insertion
adductor tubercle on femur
adductor magnus posterior (extensor head) innervation
tibial protion of sciatic nerve
articularis genu origin
anterior surface of the distal femoral shaft
articularis genu insertion
proximal capsule of the knee
articularis genu innervation
femoral nerve
biceps femoris long head origin
from a common tendon with the semitendinosus; originiating from the medial impression on the posterior surface of the ischial tuberosity and part of the sacrotuberous ligament
biceps femoris long head insertion
head of the fibula
biceps femoris long head innervation
tibial portion of the sciatic nerve
biceps femoris short head origin
lateral lip of the linea aspera below the gluteal tuberosity
biceps femoris short head insertion
head of the fibula
biceps femoris short head innervation
common peroneal portion of the sciatic nerve
gemellus inferior origin
tuberosity of the ischium
gemellus inferior insertion
blends with the tendon of the obturator internus
gemellus inferior innervation
nerve to the quadratus femoris
gemellus superior origin
dorsal surface of the ischial spine
gemellus superior insertion
blends with the tendon of the obturator internus
gemellus superior innervation
nerve to the obturator internus
gluteus maximus origin
outer ilium, posterior gluteal line, aponeurosis of the erector spinae & gluteus medius muscles, posterior side of sacrum & coccyx & part of sacrotuberous & posterior sacro-iliac ligaments
gluteus maximum insertion
gluteal tuberosity & iliotibial band
gluteus maximum innervation
superior gluteal nerve
gluteus minimus origin
outer surface of the ilium between the anterior & inferior gluteal lines, as far posterior as the greater sciatic notch
gluteus minimus insertion
anterior aspecto of the greater trochanter
gluteus minimus innervation
superior gluteal nerve
gracilis origin
anterior aspect of lower body of pubis & inferior ramus of pubis
gracilis insertion
proximal medial surface of the tibia just posteriior to the upper end of the attachment of the sartorius
gracilis innervation
obturator nerve
iliopsoas (psoas major) origin
transverse processes & lateral bodies of the last thoracic & all lumbar vertebrae including the intervertebral discs
iliopsoas (psoas major) insertion
lesser trochanter of the femur
iliopsoas (iliacus) origin
superior 2/3 oif the iliac fossa, inner lip of the iliac crest, & small region of the sacrum across the sacroiliac joint
iliopsoas (iliacus) insertion
lesser trochanter of the femur vis the lateral side of the psoas major tendon
iliopsoas (iliacus) innervation
femoral nerve
obturator externus origin
external surface of the obturator membrane & surrounding external surfaces of the inferior pubic ramus & ischial ramus
obturator externus insertion
medial surface of the greater trochanter at the trochanteric fossa
obturator externus innervation
obturator nerve
obturator internus origin
internal side of teh obturator membrane & immediately surrounding surfaces of the inferior pubic ramus & ischial ramus; bony attachments extend superiorly within the pelvis to teh greater sciatic notch
obturator internus insertion
medial surface of the greater trochanter just anterior & superior to the trochanteric fossa
obturator internus innervation
nerve to the obturator internus
pectineus origin
pectineal line on superior pubic ramus
pectineus insertion
pectineal (spiral) line on the posterior surface of the femur
pectineus innervation
femoral nerve & occasionally a brach from the obturator nerve
piriformis origin
anterior side of the sacrum between the sacral formaina; blends partially with the capsule of the sacroliliac joint
piriformis insertion
apex of the greater trochanter
piriformis innervation
nerve to the piriformis
politeus origin
by an intracapsular tendon that attaches to the lateral aspect of the lateral femoral condyle
politeus insertion
posterior surface of the proximal tibia, above the soleal line
politeus innervation
tibial nerve
psoas minor origin
transverse processes & lateral bodies of the last thoracic & the first lumbar vertebrae including the intervertebral disc
psoas minor insertion
pubis near the pectineal line
psoas minor innervation
femoral nerve
quadratus femoris origin
lateral surface of the ischial tuberosity just anterior to the attachments of the semimembranosus