As per the details I have submitted.. U have been diagnosed with osteo arthritis and rheumatoid arthritis
Pain management is not the only modality available , there are other treatment modalities available ...
1. For rheumatoid arthritis DMRDS disease modifying anti rheumatoid drugs available like methotrexate, sulfasalazine , and hydroxy chloroquine.
2. For osteoarthritis
depending upon grading treatment is available and even u can do joint replacement
So consult a rheumatologist/orthopaedic surgeon
..to get better information