Lower Limb OIAN Flashcards
pectineus
C: anterior thigh O: pubis (superior ramus) I: femur (pectineal line) B: femoral artery (medial circumflex N: femoral nerve (L2, L3) A: Hip flexor, thigh adductor, medial rotator
psoas
C: anterior thigh (iliopsoas) O: vertebrae T12-L5 I: femur (lesser trochanter) B: femoral artery (deep) N: anterior lumbar rami (L1, L2, L3) A: hip flexor
iliacus
C: anterior thigh (iliopsoas) O: ilium (superior iliac fossa) I: femur (lesser trochanter) B: femoral artery (deep) N: femoral nerve (L2, L3) A: hip flexor
sartorius
C: anterior thigh
O: ASIS
I: tibia (superomedial surface; pers anserinus)
B: femoral artery (deep)
N: femoral nerve (L2, L3)
A: hip flexor, knee flexor, thigh abductor, lateral rotator
rectus femoris
C: anterior thigh (quadriceps femoris)
O: Anterior-AIIS // Posterior- ilium above acetabulum
I: Quadriceps tendon to patella. Patellar ligament to tibial tuberosity.
B: femoral artery (deep)
N: femoral nerve (L2, L3, L4)
A: knee flexion, hip extension
vastus lateralis
C: anterior thigh (quadriceps femoris)
O: femur (greater trochanter, lateral linea aspera)
I: Quadriceps tendon to patella. Patellar ligament to tibial tuberosity.
B: perforating branches of deep femoral artery
N: femoral nerve (L2, L3, L4)
A: knee extension
vastus intermedius
C: anterior thigh (quadriceps femoris) O: femur (anterior/lateral) I: Quadriceps tendon to patella. Patellar ligament to tibial tuberosity. B: femoral artery (deep) N: femoral nerve (L2, L3, L4) A: knee extension
vastus medialis
C: anterior thigh (quadriceps femoris)
O: femur (intertrochanteric line, medial linea aspera)
I: Quadriceps tendon to patella. Patellar ligament to tibial tuberosity.
B: femoral artery (deep)
N: femoral nerve (L2, L3, L4)
A: knee extension
articularis genu
C: anterior thigh
O: femur (anterior surface, superior to knee)
I: synovial membrane of knee joint
B: lateral femoral circumflex artery (descending branch)
N: femoral nerve (L3, L4)
A: prevents synovial impingement between patella and femur (pulls up during extension)
Adductor Longus
C: Medial Thigh O: Pubis (Inferior to crest) I: Femur (middle linea aspera) B: Deep femoral artery, Obturator Artery N: Obturator Nerve (Anterior; L2, L3, L4) A: Thigh Adductor
Adductor Brevis
C: Medial Thigh
O: Pubis (Inferior ramus)
I: Femur (Pectineal line;
superior linea aspera)
B: Deep femoral artery, Obturator Artery (anterior branch)
N: Obturator Nerve (Anterior; L2, L3, L4)
A: Thigh Adductor, Thigh Flexor (weak)
adductor magnus
C: Medial Thigh
O: pubis (inferior ramus), ischium (ramus),
ischial tuberosity
I: femur (linea aspera, adductor tubercle, medial supracondylar line),
gluteal tuberosity
B: deep femoral artery, obturator artery (anterior branch)
N: Adductor portion- obturator nerve (L2, L3)
Hamstring portion- sciatic nerve (tibial division; L4)
A: Thigh adductor (adductor part), hip extensor (hamstring part)
gracilis
C: medial thigh
O: pubis (inferior ramus)
I: tibia (superomedial surface, pes anserinus)
B: obturator artery (anterior branch)
N: obturator nerve (L2, L3)
A: thigh adductor, knee flexor, medial rotator
obturator externus
C: medial thigh
O: obturator foramen (external surface, ventral side)
I: femur (intertrochanteric fossa)
B: obturator artery (posterior branch)
N: obturator nerve (L3, L4)
A: lateral rotator, steadies femoral head in acetabulum
semitendinosus
C: posterior thigh
O: ischial tuberosity
I: tibia (superomedial surface, pes anserinus)
B: deep femoral artery, perforating branches
N: sciatic nerve (tibial division; L5, S1, S2)
A: hip extensor, knee flexor, tibia medial rotation