I stabbed my hand with a knife about one inch below the palm's center, it wasnt too deep. but, i did some tendon damage its been months. still no %100?

Hand laceration: If there is an area of numbness, limited finger motion or pain with motion or discoloration/coolness at any fingers you may have a nerve/tendon/or artery injury. If there is swelling redness or drainage an infection may be complicating the recovery.

Tendons: can heal a small partial tear but complete tears need surgical repair to regain function.