A 19-year-old man presents with a painful swollen knee 2 days after a football injury. Joint is warm with large effusion; afebrile; able to bear weigh...

Question

A 19-year-old man presents with a painful swollen knee 2 days after a football injury. Joint is warm with large effusion; afebrile; able to bear weight. Next best investigation?

Accepted Answer

Joint aspiration under aseptic technique

Answer

Urgent MRI knee

Answer

Plain X-ray knee

Answer

CRP only

Answer

Empirical antibiotics immediately

mrcem sba MCQ (SBA): Acute Knee Effusion

A 19-year-old man presents with a painful swollen knee 2 days after a football injury. Joint is warm with large effusion; afebrile; able to bear weight. Next best investigation?