There are two treatments: surgery and non-surgery.
The treatment of limb scars, whether surgical or non-surgical, will leave traces. It depends on the width and color of the scar. Especially the scar on your knee joint, which belongs to the sports part, will widen in the future.
Depending on the scar, the cost of treatment may be between 7500 and 20000.
If it can be prevented early, the scar may be much smaller. Don't wait for the scar to get bigger before treatment. Prevention is better than cure.