During pronation of the foot, the axes of which two joints become parallel?

Right colic aery is a small vessel that is highly variable in its anatomy and may be absent.Right colic aery most commonly arises as a common trunk with the middle colic aery.Alternatively, it may arise as a separate branch from the right side of the superior mesenteric aery, or from the ileocolic aery (when it is referred to as an accessory right colic aery), and occasionally it may be absent. The right colic aery is highly variable in its anatomy.Variations in the anatomy of the middle colic aery left colic aery and superior rectal aeries are rarely seen.The middle colic aery usually arises from the anterolateral aspect of the superior mesenteric aery, The principal aerial supply to the upper two-thirds of the rectum is the superior rectal aery. Superior rectal aery is the principal continuation of the inferior mesenteric aery. It divides into two branches at the level of the third sacral veebra.(Refer: Richard S. Snell's Clinical Anatomy by Regions, 9th edition, pg no: 192-194)