First of all, no matter what direction your scar is called, whether it is horizontal or vertical, don't do knee-bending leg exercises, such as squats. If you do this squat, it will definitely cause the wound to crack, and if it is serious, it may also lead to bleeding, so the pain feels great. There are also various squats and leg lifts, which must be restrained for good health. Because you don't want to hurt other parts of your knee, if you do, it may be permanent and irreversible, so you must cherish your knee.
Of course, this doesn't mean that you can't keep fit. Pay attention to the intensity and movements, focusing on the first half of your training, such as bench press and pull-ups, emphasizing the strength of the upper body, and sitting better. If you stand, it may cause stress on your knee, which is not conducive to the recovery of knee wounds. Proper exercise can help us to recover the wound, but don't exercise too much or carry too much weight, which may lead to disconnection.
I once met a woman who came to the gym. Her condition is worse than sewing a needle on her knee. The whole right leg was cut into steel plates. The doctor wants him to resume training properly to prevent muscle atrophy. After coming to the gym, the coach wouldn't let him touch the movements related to his legs, but only let him walk slowly on the treadmill. After all, no one can bear the responsibility for the accident. For your own health, you can also take some time to exercise after the wound heals. Don't worry. I can devote myself to training better when I am in good health, but I am not happy now.