Anatomy

Question 1

Midtarsal joints ligaments

Answer 1

Bifurcate, short and long plantar, plantar calcaneonavicular

Question 2

Ossification of coalitions

Answer 2

TN 3-5 years (AP view)
CN 8-12 years (oblique foot view)
TC 12-16 years (Harris view)

Question 3

Lawson’s classification

Answer 3

differentiation various forms of accessory navicular
Navicular tuberosity goes proximal to distal : Type 1 –> Type 2 –> Type 3

Type 1: round small, located in PTT

Type 2: large, semi-circular, next to tuberosity

Type 3: very large navicular that wraps around talar head (osseous union btwn tuberosity and this bone)

Question 4

Choke vessels

Answer 4

links angiosomes by creating a unified network so that one source artery can provide blood to multiple angiosomes beyond border