Muscles of the Hip and Knee Joint

Question 1

Iliopsoas group (iliac and psoas major)

Answer 1

O - Anterior ilium; TP’s of T12-L5

I - lessor trochanter of femur

A -flex the hip at coxal joint
- flex trunk towards thigh (psoas major only)

Question 2

The only quad muscle to cross over the hip?

Answer 2

rectus femoris

meaning that is the only one that flexes at the HIP

Question 3

Rectus Femoris (part of Quadriceps Femoris group)

Answer 3

O - AIIS of ilium (anterior inferior iliac spine)

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee; Flex the hip

Question 4

Vastus Medialis
(part of Quadriceps Femoris group)

Answer 4

O - Medial lip of liner aspera of femur

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee

Question 5

Vastus Intermedius
(part of Quadriceps Femoris group)

Answer 5

O - Anterior and lateral shaft of femur

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee

Question 6

Vastus Lateralis
(part of Quadriceps Femoris group)

Answer 6

O - Lateral lip of linea aspera of the femur

I - Tibial tuberosity (via the patella and patellar ligament)

A - Extend the knee

Question 7

Sartorius

Answer 7

O - ASIS of ilium (Anterior Superior Iliac Crest)

I - Proximal, medial shaft of tibia

A - Flex hip;
flex the knee

Actions are used when you cross one leg over the other

Question 8

Biceps femoris
(hamstring group)

Answer 8

O -
Long head: ischial tuberosity
Short head: lateral lip of linea aspera on the femur

I - Lateral head of fibula

A - Flex knee;
extend hip

Question 9

Semitendinosus
(hamstring group)

Answer 9

O - Ischial tuberosity

I - Proximal, medial shaft of tibia

A - Flex knee;
extend hip

Question 10

Semimembranosus
(hamstring group)

Answer 10

O - Ischial tuberosity

I - posterior aspect of medial condyle of tibia

A - flex knee;
extend hip

Question 11

Gluteus maximus

Answer 11

O - posterior iliac crest;
posterior sacrum;
posterior coccyx

I - linea aspera of femur;
IT band

A - extend hip;
LR hip

Question 12

Gluteus medius

Answer 12

O - superior, lateral iliac surface

I - greater trochanter of femur

A - abducts hip;
medially rotate hip

Question 13

Gluteus minimus

Answer 13

O - inferior, lateral iliac surface

I - anterior aspect of greater trochanter

A - abducts hip;
medially rotate hip

Question 14

Tensor Fasciae Latae (TFL)

Answer 14

O - Anterior iliac crest

I - IT band

A - flex hip;
abduct hip

Question 15

Adductor Group (brevis, longus, Magnus)

Answer 15

O - pubic tubercle;
inferior ramus of pubis;
ramus of ischium
ischial tuberosity

I - linea aspera of femur

A - adduct hip

Pectineus and gracilis also adduct

Question 16

Pectineus

Answer 16

O - superior ramus of pubis

I - Pectineal line of femur
linea aspera of femur

A - flex hip;
adduct hip

Question 17

Gracilis

Answer 17

O - inferior ramus of pubis

I - proximal, medial shaft of tibia at pet anserinus tendon

A - flex knee;
adduct hip

Question 18

Piriformis

Answer 18

O - anterior surface of sacrum

I - superior greater trochanter of femur

A - LR hip;
abduct hip

sciatic nerve come out underneath the piriformis

Question 19

Which three muscles collectively insert as the “pes anserine” (“pes anserinus”)?

Answer 19

sartorius
semitendinosous
gracilis