Week 9: Foot/LE Joints & mm.

Question 1

Answer 1

Transverse ligament

Question 2

Answer 2

Structure: extensor digitorum brevis

Origin: calcaneus (floor of tarsal sinus) interosseus talocalcaneal ligament, stem of interior extensor retinaculum

Insertion: long extensor tendons of four medial digits (toes 2-4)

Action:

helps ext. digitorum brevis extend 4 medial toes at the MTP and ITP joints

Question 3

Answer 3

Anterior tibiofibular ligament

Question 4

Answer 4

lateral collateral ligament

aka fibular collateral ligament

Question 5

Answer 5

Pubofemoral Ligament

Question 6

Answer 6

Iliofemoral Ligament

Question 7

Answer 7

lateral collateral ligament (of ankle)

Question 8

Answer 8

Arcuate popliteal ligament

Question 9

Answer 9

Oblique popliteal ligament

Question 10

Answer 10

long plantar ligament

Question 11

Answer 11

Structure: Flexor digitorum brevis

Origin: medial tubercle of tuberosity of calcaneus, plantar aponeurosis, intermuscular septa

Insertion: both sides of middle phalanges of lateral four digits

Innervation: medial plantar nerve

Action: flexes lateral four digits

Question 12

Answer 12

Structure: extensor hallucis brevis

Origin: calcaneus, (floor of tarsal sinus) interosseus talocalcaneal ligament, stem of inferior extensor retinaculum

Insertion: dorsal aspect of base of proximal phalanx of great toe

Action: helps the ext. hallucis longus to extend the great toe at the MTP joint

Question 13

Answer 13

Medial Meniscus

Question 14

Answer 14

Structure: Plantar interossei

Origin: plantar aspect of medial sides of shafts of metatarsals 3-5

Insertion: medial sides of bases of phalanges of 3-5th digits

Action: adducts digits 3-5

flexes metatarsophalangeal joints

Question 15

Answer 15

Structure: Abductor hallucis

Origin: medial tubercle of tuberosity of calcaneus, flex, retinaculum, plantar aponeurosis

Insertion: Medial side of base of proximal phalanx of 1st digit

Innervation: Medial plantar nerve

Main action:

• abducts hallux (big toe)
• flexes hallux

Question 16

Answer 16

Structure: quadratus plantae

Origin: medial surface and lateral margin of plantar surface of calcaneus

Insertion: posterolateral margin of tendon of flexor digitorum longus

Innervation: lateral plantar nerve

main action: assists flexor digitorum longus in flexing lateral four toes

Question 17

Answer 17

posterior tibiofibular ligament

Question 18

Answer 18

Ischiofemoral Ligament

Question 19

Answer 19

medial collateral ligament

aka tibial collateral ligament

Question 20

Answer 20

Structure:Add Hallucis (transverse head)

Origin: transverse head: plantar ligaments of metatarsophalangeal (MTP) joints

Insertion: tendons of both heads attach to lateral side of base of proximal phalanx of 1st digit

Innervation: deep branch of lateral plantar nerve

Main action:

• adducts 1st digit
• assist in transverse arch of foot by metatarsals medially

Question 21

Answer 21

interosseous membrane

Question 22

Answer 22

Structure: Flex. Digiti minimi brevis

Origin: Base of 5th metatarsal

Insertion: base of proximal phalanx of 5th digit

Innervation: Superficial branch of lateral plantar nerve

Action: Flexes proximal phalanx of 5th digit, thereby assisting w flexion

Question 23

Answer 23

Structure: dorsal interossei

Origin: adjacent sides of shafts of metatarsals 1-5

Insertion: 1st: medial side of proximal phalanx if 2nd digit

2-4th: lateral sides of 2-4th digits

Action: Abducts digit 2-4 and flex metatarsophalangeal joints

Question 24

Answer 24

Structure: lumbricals

Origin: tendons of flex. digitorum longus

Insertion: medial aspect of expansion over lateral four digits

Innervation: medial 1; medial plantar nerve, lateral 3; lateral plantar nerve

Action: flex proximal phalanges, extend middle and distal phalanges of lateral four digits

Question 25

Answer 25

Structure: Abductor digiti minimi Origin: medial and lateral tubercles of tuberosity of calcaneus, plantar aponeurosis, intermuscular septa Insertion: lateral side of base of proximal phalanx of 5th digit Innervation: lateral plantar nerve Action: abducts and flexes little toe

Question 26

Answer 26

Structure: Adductor hallucis (oblique head) Origin: oblique head: bases of metatarsals 2-4 Insertion: tendons of both heads attach to lateral side of base of proximal phalanx of 1st digit Innervation: deep branch of lateral plantar nerve Main action: flexes proximal phalanx of 5th digit while assisting with its flexion

Question 27

Answer 27

lateral meniscus

Question 28

Answer 28

Posterior cruciate ligament

Question 29

Answer 29

Ligamentum teres (ligament of the head of the femur)

Question 30

Answer 30

Patellar Ligament

Question 31

Answer 31

Coronary Ligament | (medial and lateral)

Question 32

Answer 32

deltoid ligament