Foot and Ankle Joints

Question 1

Proximal Tibiofibular Joint is what type of joint?

Answer 1

synovial, functionally planar (so less talk of roll and glide)

Question 2

Proximal tibiofibular Joint Structures

Answer 2

• fairly strong capsule

LIGAMENTS:

• anterior proximal tibiofibular
• posterior proximal tibiofibular

Question 3

Distal Tibiofibular Joint is what type of joint?

Answer 3

syndesmosis, or fibrous union

Question 4

Distal Tibiofibular Joint Components

Answer 4

• tibia and fibula separated by fibro-adipose tissue
• no associated synoivial joint capsule
  LIGAMENTS:
• anterior distal tibiofibular
• posterior distal tibiofibular
• crural interosseous tibiofibular * (strongest)

Question 5

interosseous membrane

Answer 5

tough fibrous sheet of connective tissue
FUNCTIONS:
- separates the anterior compartment from the posterior compartment
- serves as sites for muscular attachments

2 openings/apertures:

• aperture for the anterior tibial vessels
• aperture for the perforating branch of the fibular artery

Question 6

Osteology of the Foot

Answer 6

REARFOOT
- talus
- calcaneus
MIDFOOT
- navicular
- lateral, intermediate and medial cuneiforms
- cuboid
FOREFOOT
- 5 metatarsals (base, shaft, head)
- 14 phalanges (3/digit except 1st)

Question 7

Wolf’s Law

Answer 7

bones adapt to changes/stresses that get placed on it

- 1st metatarsal is shortest and thickest, developing as we weight bear (ending up bearing about 1/3 of our body weight)