<prompt> Answer this question truthfullyWhich type of arthritis is identified by the presence of inflammatory synovial fluid with a white blood cell count of greater than 5000mm3, osteoarthritis or rheumatoid arthritis?  <response>: <reason> Rheumatoid arthritis is the type of arthritis that is characterized by inflammatory synovial fluid with a white blood cell count of greater than 5000mm3. 