Ankle

Question 1

Anterior compartment

Answer 1

• tibialis anterior
• extensor hallcis longus
• extensor digitorum longus

Question 2

Plantar flexors of ankle

Answer 2

• gastrocnemius - peroneus longus
• soleus - peroneus brevis
• tibialis posterior - flexor digitorum longus
• plantaris - flexor hallucis longus

Question 3

Extensor hallucis longus

1) origin
2) insertion
3) action

Answer 3

1) anteromedial fibula shaft & interossesous membrane
2) distal phalanx of great toe
3) extends great toe & doriflexes foot

Question 4

Fibularis (peroneus) tertius

1) origin
2) insertion
3) action

Answer 4

1) last 1/3rd of distal, anterior of fibula & interosseous membrane
2) base of fifth metatarsal
3) dorsiflexes and everts the foot

Question 5

Extensor digitorum longus

1) origin
2) insertion
3) action

Answer 5

1) lateral condyle of tibia & 3/4th of proximal fibular & interosseous membrane
2) fibers run inferiorly and split into 4 and insertion on digits 2-5

3) assists in dorsiflexion & extends metatarsophalangeal joints of digits 2-5
Assists in extension of interphalongeal joints 2-5

Question 6

Tibialis anterior

1) origin
2) insertion
3) action

Answer 6

1) lateral condyle and upper 2/3rds of tibial shaft
2) by tendon into inferior surface of medial cuneiform and 1st metatarsal bone
3) dorsiflexes foot and assists inversion

Question 7

Fibularis (peroneus) brevis

1) origin
2) insertion
3) action

Answer 7

1) distal fibular shaft
2) by tendon running behind the lateral malleolus to insert on the proximal end of metatarsal 5
3) plantar flexes and everts foot

Question 8

Fibularis (peroneus) longus

1) origin
2) insertion
3) action

Answer 8

1) head and upper portion of lateral side of fibula
2) by long tendon that curves under foot to 1st metatarsal and medial cuneiform
3) plantar flexes and everts the foot

Question 9

Plantaris

1) origin
2) insertion
3) action

Answer 9

1) posterior femur above lateral condyle
2) via a long thin tendon into calcaneus
3) assists in leg flexion and plantar flexion of foot

Question 10

Soleus

1) origin
2) insertion
3) action

Answer 10

1) posterior tibia & fibula & soleal line
2) posterior Calcaneus via calcaneal tendon
3) plantar flexes foot at the ankle

Question 11

Gastrocnemius

1) origin
2) insertion
3) action

Answer 11

1) by two heads from the medial & lateral condyle of the femur
2) posterior Calcaneus via the calcaneal tendon
3) plantar flexes foot at the ankle and assists in flexion of the leg at the knee

Question 12

Tibialis posterior

1) origin
2) insertion
3) action

Answer 12

1) superior tibia & fibula & interosseous membrane
2) tendon passes behind medial malleolus and arch of the foot and inserts to the navicular bone, the underneath of the 3 uniforms and base of metatarsal 2 though 4
3) inverts foot and assists plantar flexion

Question 13

Flexor hallucis longus

1) origin
2) insertion
3) action

Answer 13

1) middle part of shafted of fibular & interosseous membrane
2) tendon runs under foot to distal phalanx of great toe
3) flexes big toe at all joints, plantar flexed &inverts joint

Question 14

Flexor digitorum longus

1) origin
2) insertion
3) action

Answer 14

1) posterior surface of tibia
2) tendon runs behind medial malleolus and splits to insert of distal phalanges 2-5
3) flexes all joints of 2-5 & assists in plantar flexion and inversion