Ranking Question - Elke Wynberg

A 74 year old patient presents with a 3 hour history of sudden onset, intense pain in the right knee and a fever. Rank the following diagnoses given this information, with the most likely diagnosis given first.

Reactive arthritis

Rheumatoid arthritis

Septic arthritis

Osteoarthritis

Patellar tendonitis

Answer:

1. Septic arthritis

2. Reactive arthritis

3. Rheumatoid arthritis

4. Patellar tendonitis

5. Osteoarthritis