Cracking noises in the knee?

it may be because it is inflammed. you did have surgery right. when our knee is inflammed it is bigger than normal and may make some sounds it wouldn't normally make, such as your other knee. Bromelain is a natural anti-inflammatory that is thought to speed healing. it is sold in tablet for in some health food stores and pineapple is what it is made from.it vcan cause dermatitis in some ppl ,so if you begin to itch stop taking it. also build up your muscles that surround the area where you injured.also ibuprofen is an anti-inflammatory.