Diagnosis and treatments

Arthrocentesis

Arthrocentesis is the aspiration of fluid from a joint with a fine needle, for diagnostic and sometimes therapeutic purposes.

Purpose

Fluid analysis can identify urate or pyrophosphate crystals, assess inflammation and exclude infection.

Procedure

Performed in clinic using sterile technique and usually well tolerated.

Related content

A hot, very painful and swollen joint, especially with fever, requires urgent medical attention.