Skeletal Muscle of Lower Extremity Flashcards
Psoas major: ‘o&i’
O: anterolaterally on bodies of T12-L5 and the intervertbral discs between, and anteriorly on the TP’s of L1-L5
I: lesser trochanter of femur
Iliacus: o&i
O: upper 2/3 of iliac crest, AIIS and sacral ala (internal ilium)
I: lesser trochanter of femur
Tensor fasciae latae: o&i
O: ASIS
I:1/3 of the way down the thigh at the ITB
Sartorius : o&i
O:ASIS
I:pes anserine tendon (proximal anteromedial tibia)
Pectineus: o&i
O: pectineal line on the superior pubic ramus (pubis)
I: pectineal line of the femur - proximal posterior shaft of the femur
Psoas major: ‘actions’
flexes and laterally rotates thigh at hip joint
posteriorly tilts pelvis at LS joint
Psoas major: ‘nerve’
Lumbar plexus (L1-3)
Iliacus: ‘actions’
flexes and laterally rotates thigh at hip joint
iliacus: ‘nerve’
femoral nerve (L2-3)
TFL: ‘actions’
flexes, ABD and medially rotates thigh at the hip joint
TFL: ‘nerve’
superior gluteal nerve (L4,5 and S1)
sartorius: ‘action’
flexes, ABD and laterally rotates thigh at hip joint
flexes the leg at the knee joint
sartorius: ‘nerve’
femoral nerve (L2,3)
pectineus: ‘action’
flexes and ADD thigh at the hip joint
pectineus: ‘nerve’
femoral nerve
adductor longus: ‘o&i’
o: anterior body of pubis
i: middle 1/3 at the medial lip of the femur (linea aspera)
adductor longus: ‘action’
flexes and ADD thigh at the hip joint
adductor longus: ‘nerve’
obturator nerve
gracilis: ‘o&i’
o: anterior body and inferior ramus of the pubis
i: pes anserine tendon (proximal anteromedial tibia)
gracilis: ‘actions’
ADDucts and flexes the thigh at the hip joint
Flexes the leg at the knee joint
gracilis: ‘nerve’
obturator nerve
adductor brevis: ‘o&i’
o: inferior ramus of the pubis
i: proximal 1/3 of the linea aspera of the femur
adductor brevis: ‘action’
Adducts and flexes the thigh at the hip joint
adductor brevis: ‘nerve’
obturator nerve
