Yosef Karo, Shulchan Aruch — 62 Laws of a piece from a live animal
“ The excess part that remains in a place that does not make the animal treif (improper for consumption) - it is permitted to eat it, and the principle of "like collecting the value of blood" is not cited, and it is considered decomposed limb (alternative: a lengthy explanation) .A limb that is detached from its place in a location that does not make the animal treif - it is permitted to eat it even if there is no skin or flesh covering the majority (Rashba, Section 49) . ”
