Anterior Thigh OINAS Exam Review
Pectineus - ANS-O: superior ramus of pubis
I: pectineal line
N: Femoral nerve (L2,L3)
A: adducts and slightly flexes hip joint, assists in hip ER
Psoas Major - ANS-O: Sides T12-L5 of vertebrae, TPs of all lumbar vertebrae
I: lesser trochanter
N: Anterior rami (L1-L3)
A: flexes hip, ER hip, stabilize hip joint in standing
Psoas Minor - ANS-O: sides of T12-L1 vertebrae and IV discs
I: pectineal line, iliopubic eminence via iliopectineal arch
N: Anterior rami (L1,L2)
A: flexes hip, ER hip, stabilize hip joint in standing
Iliacus - ANS-O: iliac crest, iliac fossa, ala of sacrum, anterior SI ligament
I: psoas major tendon, lesser trochanter, femur distal to it
N: Femoral nerve (L2,L3)
A: flexes hip, ER hip, stabilize hip joint in standing
Sartorius - ANS-O: ASIS, superior notch inferior to it
I: superior medial tibia (pes anserinus)
N: Femoral nerve (L2,L3)
A: flexes hip, abd, ER, flexes knee joint (IR leg when knee is flexed)