I have left knee injury before two years at that time I had thin ligament problem. Doctor prescribed me medication like pain killers and some sort of exercise. That give me some relief in 6 moths. But now after 3 years it's again appears. Some doctor said no need of surgery some says it requires. MRI reports says ligament is thin now. I prefer one ortho surgeon. He gave me osteo 10 medicine and some exercise. But still it's panning. What should I do. Can I do hard gym exercise. Please advice.