Blood Supply of The Talus -

Extraosseous Blood Supply

Posterior Tibial Artery
- 1. Artery of the Tarsal Canal
  - Arises from Posterior Tibial A 1cm proximal to division
  - Passes anterior to FDL
  - Enters Tarsal Canal (only other structure present is the Interosseous Ligament)
  - Branches then enter Talus
    - From medial side
    - Inferiorly from the canal
  - Continues to Tarsal Sinus
  - Anastomosis with arteries in Tarsal Sinus to produce vascular sling
- 2. Deltoid Branch
  - Important branch from the artery of the Tarsal Canal (occasionally directly from the Posterior Tibial A)
  - Between the leaves of the Deltoid ligament
  - Sends branches that enter via medial side of the talar body
  - Responsible for supply to the medial 1/2 of the talar body
Anterior Tibial Artery
- 1. Superior Neck Branches
  - From the Dorsalis Pedis
- 2. Artery of Tarsal Sinus
  - Formed by anastomosis of branch of the Dorsalis Pedis that crosses the navicular (lateral tarsal branch), the branch of the Perforating Peroneal A
  - Supplies the lateral 1/2 of the talar body
Peroneal A
- Unimportant
- Contributes to plexus around the posterior talus around the posterior tubercle area
- Perforating branch to artery of the Tarsal Sinus

Head of Talus
- Medially from branches of the Dorsalis Pedis
- Laterally from the artery of the Tarsal Sinus
Body of talus
- Laterally from the artery of the Tarsal Sinus (Lateral 1/3)
- Middle part from branches of the anastomosis between the arteries of Tarsal Sinus & Tarsal Canal
- Medial part from Deltoid artery (Medial 1/3)