Case study of Septic arthritis

Case Study 2 66-year-old female patient comes to your clinic with a PMH of Hypertension and arthritis in her right  knee. Pt states that 72 hours ago she underwent an infiltration in his right knee at this rheumatologist  doctor’s office because she complained of pain no resolved with NSAID. Today she presented to your primary office with pain in her right knee, with signs and symptoms of  fever (102ºF) and reduced mobility.1) What do you suspect? Septic Arthritis2) What would you order for this patient, and what do you think you would find?3) What would it be your recommendation in this case?4) Would you recommend any empirical treatment? For how long?