A 35-year-old man presents with acute onset severe pain, redness, and swelling in his left knee. He is feverish (38.5°C) and unable to weight-bear. Wh...

Question

A 35-year-old man presents with acute onset severe pain, redness, and swelling in his left knee. He is feverish (38.5°C) and unable to weight-bear. What is the most crucial immediate investigation?

Accepted Answer

Joint aspiration and synovial fluid analysis

Answer

Knee X-ray

Answer

MRI knee

Answer

Serum urate level

Answer

Blood cultures

ukmla MCQ (SBA): Septic Arthritis

A 35-year-old man presents with acute onset severe pain, redness, and swelling in his left knee. He is feverish (38.5°C) and unable to weight-bear. What is the most crucial immediate investigation?