Thank you very much for your comment friend @techmillion. The truth is that your doubts are very interesting:

• With regard to the first question: Indeed the circulation is interrupted in most fractures, they tend to break and bleed blood vessels, fortunately almost always there are other neighboring arteries that replace these functions, (something that does not happen with the astragalus bone, and therefore should be operated as soon as possible). There is no risk of anything harmful happening to the bloodstream except for a thrombus, but it usually occurs in fractures of large bones such as the femur at the hip or knee, so anticoagulants must be given.

• And finally, when the fractures are many fragments (comminuted) we usually perform CT-SCAN to determine the largest fragments, usually the goal is to maintain the alignment of the bones, often these types of fractures heal better than simple fractures but do not believe it.

Thank you for your interest, a hug for you. :D