RP should be RF (rheumatoid factor), right Although a considerable number of senile rheumatic diseases are atypical, such as swelling of knees, pain, and limited movement are the first or main manifestations, but peripheral small joints such as fingers are not obviously involved. But MRI of both knees (? The examination results suggest that there is traumatic knee arthritis (the history of injury is not mentioned in the medical history? ) It is possible, so the diagnosis is not clear at present. It is recommended to go to the department of bone and joint surgery, rheumatology and immunology and rehabilitation medicine in the local big hospital.

(Dr. Xu Fangyuan solemnly reminds me that because I can't see the patient face to face, I can't fully understand the condition. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )

Xu Fangyuan, Affiliated Hospital of Luzhou Medical College/