osteoarthritis
"Had my last of three injections in my left knee on June 2, 2017. I had about a week of minimal pain and some return of movement. Today, June 21, 2017, the pain is about twice as bad as before the injections and my knee is swelled up so bad it's hard to put on jeans. The swelling has also moved down to my ankle.  My left ankle is twice the size of my right ankle. My doctor told me to come back in 6 weeks for a cortisone "booster" if I still felt pain. If I might need a "booster", why was this expensive trash recommended in the first place?"