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Blood Supply to Talus

Discussion

  • body of talus is furnished w/ blood vessels from inferior talar surface in sinus tarsi and from talar neck;
  • non displaced fractures of talar neck disrupt intraosseous branches of tarsal sinus and tarsal canal, but major vascular sling remains intact;
  • w/ displaced fractures of talar neck, branches from dorsalis pedis artery to talar neck, artery to tarsal canal & artery to tarsal sinus (major arterial supply to talus) are ruptured;
  • dorsalis pedis artery:
  • most blood supplied to the head and neck of the talus arises from the dorsalis pedis artery;
  • anastomosis within sinus tarsi & tarsal canal form major blood supply to the talar head;

artery of the sinus tarsi

  • the sinus tarsi and sinus canal anastomosis lies beneath the talar neck;
  • peroneal artery
  • from peroneal artery comes branches to posterior process & branch to form artery of sinus tarsi;
  • dorsalis pedis artery
  • supplies branches to dorsal talar neck & branch to form artery of sinus tarsi;

artery of sinus canal

  • branch of posterior tibial forms anastomotic sling inferior to talus from which branches arise to enter talar neck;
  • deltoid branches usually arise from the artery of the tarsal canal & supply the medial third of the body;
  • main artery supplying blood to the body of the talus is the artery of the tarsal canal