Question: Illness: meniscus tear, knee joint, began to have pain in the lateral side of his left knee three years ago, but he felt that it was nothing serious. He can do strenuous exercise, but sometimes he sprains his joints, but once he exercises, his knees will swell. After a week's rest, he will be fine. Therefore, he didn't get treatment until he became serious in a strenuous exercise three months ago ... he couldn't jump and didn't use force to climb the stairs for the first time. When he is lying flat, his legs should hurt and he can't straighten up. After three months' rest, I made some progress, but I still couldn't jump. I went to the hospital for examination and said that meniscus tear suggested me to have arthroscopic surgery, but I was worried that there would be sequelae after the operation, which would affect my future sports career. Besides, I'm a student at school, and I'm worried that surgery will delay my studies ... I hope a good doctor can give me a clear answer, thank you! Can you do strenuous exercise after the operation? I regard exercise as my life, so I asked the doctor to give me a treatment suggestion ... Can my knee bend after the operation? ! Can it be the same as before? ! If I can't achieve that effect, I'd rather not have surgery ... test and check the results (please use the tool on the right to upload):