Hi doctors, can you tell me what is involved in "protein injections" to the knee, and is it painful?

See details. These injections often provide several months of significant pain relief in cases of moderate osteoarthritis of the knee. There is little risk of side effects and any discomfort is mild and related to the needle puncture. They usually will not work for advanced arthritis and may be no more effective than nsaids such as naproxen.