Why is brace/immobilizer, but not locked, given after arthroscopic on knee to remove scar tissue, years after tkr??

Knee surgery : They place you in a immobilizer to prevent you from pending your knee. People that keep there knee bent will cause the knee to lock and unable to fully extend again, this altering your walk and gait.

Several possibilities.: There are multiple procedures that can be called arthroscopic scar removal. Therefore, your doctor is the best source for this answer and you can likely get the answer with a phone call to the doctors office. A non-locked brace can be used for stabilizing a damaged ligament during healing or to protect a knee that will be weak after arthroscopy, for simply for comfort. Call your doctor! Good luck