Lower Extremity Origins and Insertions

Question 1

Psoas Major

Answer 1

Origin: T12-L5
Insertion: Lesser trochanter of the femer
Innervation: Lumbar Plexus

Question 2

Illiacus

Answer 2

Origin: Illiac fossa
Insertion: Lesser trochanter
Hip joint capsule
Innervation: Lumbar Plexus

Question 3

Gluteus Maximus

Answer 3

Origin: Posterior surface of the ilium
Insertion: Illiotibial tract
Gluteal line
Innervation: Inferior gluteal nerve

Question 4

Gluteus Medius and Minimus

Answer 4

Origin: Posterior surface of the illium
Insertion: lesser trochanter
Innervation: Superior gluteal nerve

Question 5

Tensor Fasciae latae

Answer 5

Origin: ASIS
Insertion: through the illiotibial tract to the lateral condyle of the tibia
Innervation: superior gluteal nerve

Question 6

Piriformis

Answer 6

Origin: Sacrum, Illium
Insertion: Greater trochanter of the femur
Innervation: S1 and S2

Question 7

Adductor Longus

Answer 7

Origin: pubis
Insertion: Linea Aspera
Innervation: Obturator nerve

Question 8

Adductor Magnus (adductor part)

Answer 8

Origin: Pubis and Ischium
Insertion: Linea Aspera
Innervation Obductor Nerve

Question 9

Adductor Magnus (Hamstring part)

Answer 9

Origin: Ischial tuberosity
Insertion: adductor tubercle
Innervation: Tibial nerve

Question 10

Gracilis

Answer 10

Origin: Pubis (near pubis symphysis)
Insertion: medial side of tibia
Innervation: Obturator nerve

Question 11

Rectus Femoris

Answer 11

Origin: Anterior inferior iliac spine
Insertion: Patella, through patellar ligament to the tibial tuberosity
Innervation: Femoral nerve

Question 12

Vastus Lateralis

Answer 12

Origin: Greater Trochanter
Linea Aspera
Insertion: Patella, through patellar ligament to the tibial tuberosity
Innervation: Femoral nerve

Question 13

Vastus Medialis

Answer 13

Origin: Linea aspera
Insertion: Patella, through patellar ligament to the tibial tuberosity
Innervation: Femoral nerve

Question 14

Vastus Intermedius

Answer 14

Origin: Body of the femur
Insertion: patella, through patellar ligament to the tibial tuberosity
Innervation: femoral nerve

Question 15

Sartorius

Answer 15

Origin: Anterior superior iliac spine
Insertion: medial side of the tibial tuberosity
Innervation: femoral nerve

Question 16

Long head of the Biceps femoris

Answer 16

Origin: ischial tuberosity
Insertion: head of the fibula
Innervation: tibial nerve

Question 17

Short head of the biceps femoris

Answer 17

Origin: distal body of femur
Insertion: head of the fibula
Innervation: common fibular nerve

Question 18

Semitendinosus

Answer 18

Origin: Ischial tuberosity
Insertion: tibia
Innervation: tibial nerve

Question 19

Semimembranosus

Answer 19

Origin: Ischial tuberosity
Insertion: Medial condyle of the tibia
Medial collateral ligament
Innervation: tibial nerve

Question 20

Tibialis anterior

Answer 20

Origin: proximal lateral tibia
          Interosseous membrane
Insertion: medial cuniform
              1st metatarsal
Innervation: deep fibular nerve

Question 21

Fibularis longus

Answer 21

Origin: superior 2/3 of the fibularis
Insertion: medial cuniform
1st metatarsal
Innervation: superficial fibular nerve

Question 22

Medial head of the gastrocnemius

Answer 22

Origin: medial condyle of the femur
Insertion: achilles tendon to calcaneus
Innervation: tibial nerve

Question 23

Lateral head of the gastrocnemius

Answer 23

Orign: lateral ocndyle of the femur
Insertion: achilles tendon to calcanus
Innervation: tibial nerve

Question 24

Soleus:

Answer 24

Origin: fibula and tibia
Insertion: through calcaneal tendon to calcaneus
Innervation: tibial nerve

Question 25

Tibialis posterior

Answer 25

Origin: tibia, fibula, innterosseus membrane
Insertion: Navicular, cunieforms, cuboid, mets 2-4
Innervation: tibial nerve

Question 26

Flexor hallicus longus

Answer 26

Origin: fibula
Insertion: distal phalanx of the great toe
Innervation: tibial nerve