A post-mortem determined his cause of death to have been a deep stab wound to his thigh that penetrated his femoral artery.

Source: https://metro.co.uk/2023/03/20/moment-honeytrap-killer-lied-to-son-about-why-she-couldnt-come-home-18469660/

Lead said: "When Margo was treated the vet said she could see Margo’s femoral artery.

Source: https://www.nwemail.co.uk/news/23718754.dog-lucky-alive-almost-tearing-artery-post-barrow/?ref=rss

This reduction was significant only at the femoral neck of the amputated limb of amputees in a subgroup analysis, with a greater reduction noted for above-the-knee than below-the-knee amputees.

Source: https://www.gjsentinel.com/lifestyle/health_and_wellness/femoral-neck-bmd-lower-in-men-with-combat-related-traumatic-injury/article_04dd709a-9435-535a-904a-0b6f9f356a0f.html