If i may clear a few things up. First how old are you? My father going on 58 has very bad knees i dont believe there is any cartilage left. You cannot heal if more then 3/4 of the cartilage is gone if im correct. PLEASE, if you value your health, take acti-flex 4000 (on amazon, its for horses, doesnt matter many humans take it even read the reviews. Just a super mega dosed vitamin, this is what your body does to heal), mk677 (this is the hormone ghrelin, makes your brain think you havent eaten. When you dont eat you release growth hormone, therefore this releases many pulses of growth hormone, growth hormone is what does the healing), pickup bpc157 (comes from stomach juices, this majorly heals, get this close to where you want to heal as you can, yes injectable just do it) and tb500 (this is a systemic healing, inject anywhere, works differently and synergystically with bpc 157) AND REFRAIN FROM CORTISONE SHOTS PLEASE!!!!! ITS JUST A BAND AID. You will get no benefit other then masking the pain! This will keep the inflammitory response down and that is what is needed to heal! I hope i helped. Ive seen it bad in my father..please act quickly. Once it is gone, you cant bring it back. Just like alot in your body.