sub-talar joint

Question 1

Classification

Answer 1

Multi-axial, Synovial, Plane, Simple joint

Question 2

Articulations

Answer 2

• Convex superior anterior calcaneus
• Concave inferior posterior Talus
  (all covered in hyaline cartilage)

Question 3

Interosseous Ligament

Answer 3

• Most important ligament connecting the 2 bones
• Dense Strong fibrous tissue
  -2 thick bands attaching to floor of sinus tarsi
  ANTERIOR: Obliquely, ASM to neck talus
  POSTERIOR: SPL to talus anterior to joint

Question 4

Ligamentum Cervicis

Answer 4

• Strong cord-like structure
• lateral end of sinus tarsi
• Limits inversion of hindfoot

Question 5

Capsule

Answer 5

• Loose fibrous capsule attaches to all joint margins
• Anterior part - adjacent to sinus tarsi, thinnest
• Lined with synovial membrane
• Thickened Laterally, Medially and posteriorly by relative ligaments

Question 6

Lateral Talocalcaneal Ligament

Answer 6

Lateral Talar tubercle - Lateral calcaneus

Question 7

Medial Talocalcaneal Ligament

Answer 7

Medial posterior talar tubercle - posterior sustentaculum tali

Question 8

Posterior Talocalcaneal Ligament

Answer 8

Lateral Posterior Talar tubercle - superior medial calcaneus