After having knee replacement surgery, a WebMD Community member has a question about sleeping at night. He says he's able to push through his "fast track" recovery and lots of physical therapy during the day. But he's having problems sleeping. He was told not to put a pillow behind his knee, but he thinks that could help him with nighttime pain.
Other community members posted their thoughts. Most said they were told to avoid using a pillow too, because it's important to be able to straighten your knee after surgery. Using a pillow keeps your knee bent and doesn't let it straighten out.
Talk to your doctor about what's best for you. Sleep is important for recovery, too. Maybe your doctor will have ideas about how you can best rest and recover.