- 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
The extra-osseous and intra-ossoeus blood supply of the talus.