Knees: Sports-medicine physicians have long suspected that steroids damage tendons and ligaments. Animal studies from the '80s show that the damage to joints begins within a few days of steroid use, and that exercise combined with steroid use makes it worse. The lab animals ended up with stiffer, weaker tendons.
hahahhaha.... nah bro the fact that im squating 405lbs for reps when i only weight 200 is messing up my joints... not the deca that im shootin which helps lubricate them