I started having the same problem at about 4 months post op. I blamed it on the Neurontin or Skelaxin I was taking. I felt like I was swelling up. Every joint hurt. I would wake up in the morning and could barely open my hands. The Dr. gave me a water pill. It did not help. Eventually I went off it and started Lyrica. It got a little better. So, I agree with the other post that maybe it is related to meds.