Excluding perhaps those with hypogonadism, I'm unaware of scientific evidence AAS promote "healing" of joint related structures, in fact the data suggests quite the opposite esp when used in supra-physiologic dosages.
And the fact MANY BB that have torn tendons or other joint related structures, while running AAS is the type of anecdotal information "bros" like
@stone988 foolishly ignore.
Moreover if AAS exerted an articular "protective effect", why are joint complaints so prevalent in BB?
Sure there are variety of reasons from heavy loads to body structure, but the bro notion AAS "heal joints" is another myth that is likely extrapolated from enhanced levels of collagen precursors in "cyclists".
And what is the most abundant protein in the body -- COLLAGEN ----- the stuff is EVERYWHERE and is the matrix or glue that ensures we humans have form around a bony foundation.
Jim