thigh AOIN

Question 1

Rectus Femoris

Answer 1

A: extend the knee and flex the hip
O: AIIS
I: tibial tuberosity (via patella and patellar lig)
N: femoral L2,3,4

Question 2

Vastus Medialis

Answer 2

A: extend the knee
O: medial lip of linea aspera
I: tibial tuberosity (via patella and patellar lig)
N: femoral L2,3,4

Question 3

Vastus Lateralis

Answer 3

A: extend the knee
O: lateral lip of linea aspera, gluteal tuberosity and greater trochanter
I: tibial tuberosity (via patella and patellar lig)
N: femoral L2,3,4

Question 4

Vastus Intermedius

Answer 4

A: extend the knee
O: anterior and lateral shaft of the femur
I: tibial tuberosity (via patella and patellar lig)
N: femoral L2,3,4

Question 5

Biceps Femoris

Answer 5

A: flex and laterally rotate the knee, tilt pelvis posteriorly
: long head - extend and laterally rotate the hip
O: long head - ischial tuberosity
: short head - lateral lip of linea aspera
I: head of fibula
N: long head - sciatic (tibial branch) L5,S1,2,3
: short head - sciatic (peroneal branch) L5,S1,2

Question 6

Semitendinosus

Answer 6

A: flex the knee, medially rotate the flexed knee, extend and assist to medially rotate the hip, tilt the pelvis posteriorly
O: ischial tuberosity
I: proximal, medial shaft of tibia at pes anserinus tendon
N: sciatic (tibial branch) L4,5,S1,2

Question 7

Semimembranosus

Answer 7

A: flex the knee, medially rotate the flexed knee, extend the hip, assist to medially rotate the hip, tilt the pelvis posteriorly
O: ischial tuberosity
I: posterior aspect of medial condyle of tibia
N: sciatic (tibial branch) L4,5,S1,2

Question 8

Adductor Magnus

Answer 8

A: adduct, medially rotate and assist to flex the hip
: posterior fibers - extend the hip
O: inferior ramus of the pubis, ramus of ischium and ischial tuberosity
I: medial lip of linea aspera and adductor tubercle
N: obturator L2,3,4 and sciatic L4,5,S1

Question 9

Pectineus

Answer 9

A: adduct, medially rotate and assist to flex the hip
O: superior ramus of pubis
I: pectineal line of femur
N: femoral and obturator L2,3,4

Question 10

Gracilis

Answer 10

A: adduct and medially rotate the hip, flex and medially rotate the flexed knee
O: inferior ramus of pubis
I: proximal, medial shaft of tibia at pes anserinus tendon
N: obturator L2,3,4

Question 11

Adductor Longus

Answer 11

A: adduct, medially rotate and assist to flex the hip
O: pubic tubercle
I: medial lip of linea aspera
N: obturator L2,3,4

Question 12

Adductor Brevis

Answer 12

A: adduct, medially rotate and assist to flex the hip
O: inferior ramus of pubis
I: pectineal line and medial lip of linea aspera
N: obturator L2,3,4

Question 13

Sartorius

Answer 13

A: flex, laterally rotate and abduct hip, flex and medially rotate flexed knee
O: ASIS
I: proximal, medial shaft of the tibia at pes anserinus tendon
N: femoral L2,3,4