Could use expert help with why i have pain 6 months after acl surgery?

Unusual: Pain at this stage postop would be considered unusual and a sign of a problem. Many potential causes, including scar tissue, weakness, stiffness, persistent meniscal pathology, cartilage damage, non-healing graft, or, in the case of allograft, graft rejection. Make sure your surgeon and/or therapist knows the details of your pain. If answers not adequate, then seek second opinion.