I was a competitive athlete that represented our country in 2 diff sports. I had to get my knee done. For rehab I did 12 months of HGH @ 3-4 iu/day 5 on 2 off. I also did a 15 week run of eq @ 600mg/wk. My docs and PT's were completely blown away by my recovery. Mine was not an acl...I had torn the cartlidge off down to the bone under my kneecap and they had to do a procedure called microfracture in order to stimulate new growth.