| Re: Knee operation scars
Neosporn will not help with wounds that are closed/healed. Since your scar is 3 years old, I am assuming it is not an open wound. This far out, your scar is mature, and therefore silicone sheeting with pressure would probably be of little benefit, but you could try---let me know if it works. This is how new scars are managed, and it works quite well. Otherwise you could see a plastic surgeon, and he may be able to inject the scar with steroids that may help flatten it out.
| 
Linear Mode
