After hip, knee, or shoulder surgery, many patients ask my why their joint is so stiff at night. The reason is simple. At night you’re not typically moving the joint. You may notice even after sitting for long periods of time or being stationary, that same stiff feeling will occur. If you are awoken by a stiff joint, obviously the answer is to get up and move it. Whether this be walking or just simply moving it in bed. This will make you feel better. Don’t be surprised if this could last up to two to three months after surgery.