Unit 5 - Lower Limb: Joints of the Foot and Toes (Ex. IV)

Question 1

subtalar joint

Answer 1

between I surface of talus and calcaneus
A and P compartments:
- A: talocalcaneal component of talocalcaneonavicular joint
- P: P talocalcaneal articulation

Question 2

What separates the A and P parts of the subtalar joint?

Answer 2

interosseous talocalcaneal ligament

Question 3

What joint is the main articulation that allows inversion and eversion of the foot?

Answer 3

subtalar joint

Question 4

transverse tarsal joint

Answer 4

combines talonavicular joint and calcaneocuboid joint

movement rotates from of foot relative to heel - augments inversion and eversion @ subtalar joint

Question 5

Which joint is a common site for surgical amputation of the foot?

Answer 5

transverse tarsal joint

Question 6

Which joints are small and relatively immobile?

Answer 6

tarsometatarsal and intermetatarsal joints

Question 7

metatarsophalangeal joints (MTPs)

Answer 7

condyloind synovial between heads of metatarsals and bases of phalanges:

• flexion/extension
• some abduction/adduction

Question 8

interphalangeal joints (IPs)

Answer 8

synovial hinge joints:
- flexion/extension of toes
- some inversion/eversion of foot
==> digits 2-5 and PIPs and DIPs

Question 9

Which joints contribute to smooth locomotion and maintenance of balance?

Answer 9

intertarsal joints (subtalar and transverse tarsal joints)
metatarsophalangeal joints (MTPs)
interphalangeal joints (IPs)