How do I get rid of the scar tissue after ACL surgery?

Massage. Scars thicken for 6 weeks and then remodel on their own. You can speed up the remodeling process by simple massage. Areas with more motion develop more scar tissue due to the tensile forces applied to it. Pressure garments or silicone sheeting help reduce these larger "hypertrophic" raised scars. Topical steroid creams work for itchy raised scars. Keloids need steroid injection or radiation.