leg and foot muscles

Question 1

Gastrocnemius (OIA)

Answer 1

O: condyles of the femur, posterior surfaces
I: calcaneus via calcaneal tendon
A: Flex the tibiofemoral joint
Plantar flex the talocrural joint (ankle)

Question 2

Soleus (OIA)

Answer 2

O: Soleal line; proximal posterior surface of tibia; and posterior aspect of head of fibula
I: Calcaneus via calcaneal tendon
A: plantar flex the talocrural joint (ankle)

Question 3

Popliteus (oia)

Answer 3

O: lateral condyle of the femur
I: Proximal posterior aspect of tibia
A: Medially rotate the flexed tibiofemoral joint
Flex the tibiofemoral joint

Question 4

Fibularis/ peroneus longus (OIA)

Answer 4

O: Head of fibula and proximal 2/3 of lateral fibula
I: base of the first metatarsal and medial cuniform
A: Evert the foot
Assist to plantar flex the talcrural joint (ankle)

Question 5

fibularis/ peroneus brevis (OIA)

Answer 5

O: distal 2/3 of lateral fibula
I: tuberosity of fifth metatarsal
A: Evert the foot
Assist to plantar flex the talocrural joint (ankle)

Question 6

tibialis anterior (OIA)

Answer 6

O: lateral condyle of tibia; proimal lateral surface of tibia; and interosseous membrane
I: medial cuneiform and base of the first metatarsal
A: Invert the foot
Dorsiflex the talocrural joint (ankle)

Question 7

extensor hallucis longus (OIA)

Answer 7

O: middle anterior surfaceof fibula and interosseous membrane
I: Distal phalanx of first toe
A: Extend the first toe at the metatasophalangeal and interphalangeal joints
Dorsi flex talocrural
invert foot

Question 8

Extensor digitorum Longus (OIA)

Answer 8

O: lateral condyle of tibia; proximal anterior shaft of fibula; and interosseous membrane
I: middle and distal phalanges of 2-5 toes
A: extend the 2-5 toes at the metatarsophalangeal and interphaangeal joints
Dorsiflex the talocrural joint
evert the foot

Question 9

Tibialis posterior (OIA)

Answer 9

O: proximal posterior shafts of tibia and fibula; and interosseous membrane
I: all five tarsal bones and bases of 2-4 metatarsals
A: Invert the foot
Plantar flex the talcrural joint

Question 10

flexor digitorum longus (OIA)

Answer 10

O: middle posterior surface of tibia
I: distal phalanges of 2-5 toes
A: flex the 2-5 toes at te metatarsophalangeal and interphalangeal joints
weak plantar flexion of the talocrural joint
invert the foot

Question 11

flexor hallucis longus (OIA)

Answer 11

O: middle half of posterior fibula
I: distal phalanx of first toe
A: Flex thefirst toe at the metatarsophalangeal and interphalangeal joint
weak plantar flexion of talocrural joint
invert the foot

Question 12

extensor digitorum brevis A

Answer 12

A: extend 2-5 toes at the metatarsophalangeal and interphalangeal joints

Question 13

Flexor Digitorum Brevis A

Answer 13

A: flex the middle phalanges of the 2-5 toes at the proximal interphalangeal joint

Question 14

ABductor Halluces A

Answer 14

A: ABduct the first toe at the metatarsophalangeal joint

Assist to flex the first toe (metatarsophalangeal joint)

Question 15

ABductor Digiti Minimi A

Answer 15

A: flex the 5th toe

assist to ABduct the 5th toe (metatarsophalangeal joint)

Question 16

extensor hallucis brevis A

Answer 16

A: extend the first toe (metatarsophalangeal joint)

Question 17

ADductor Hallucis A

Answer 17

A: ADduct the first toe
assist to maintain transverse arch of foot
assist to flex the first toe

Question 18

Flexor digiti minimi brevis A

Answer 18

flex the 5th toe (metatarsophalangeal joint)

Question 19

Quadratus Plantae A

Answer 19

A: assist the flexor digitorum longus to fles toes 2-5

Question 20

Plantar interossei A

Answer 20

A: ADduct the 3-5 toes (metatarsophalangeal joints)

Flex 3-5 toes (metatarsophalangeal joints)

Question 21

Dorsal Interossei A

Answer 21

A: ABduct the 2-4 toes

Flex the 2-4 toes (metatarsophalangeal joints)

Question 22

Lumbrical of the foot A

Answer 22

A: Flex the proximal phalanges of the 2-5 toes at the metatarsophalangeal joints
Extend the middle and distal phalanges of the 2-5 toes at the interphalangeal joints