5th May 2024

A 60-year-old woman presents with a sudden onset of severe pain, swelling, and redness in her right knee.

A 60-year-old woman presents with a sudden onset of severe pain, swelling, and redness in her right knee. She has a fever of 38.5°C. She has a history of type 2 diabetes and osteoarthritis. She had a corticosteroid injection in the affected knee two weeks ago. The knee is tender, and movement is severely restricted due to pain.

Which is the most appropriate initial management option for this patient?