Enhancing Knee Arthrocentesis: Boosting Operator Confidence With Point-of-Care Ultrasound (POCUS)

Point-of-care ultrasound (POCUS) is increasingly recognized as a valuable adjunct for musculoskeletal procedures, enhancing both diagnostic accuracy and procedural success. We report the case of a 34-year-old man with gout presenting with acute polyarthralgia and left knee effusion. A postgraduate year one (PGY-1) internal medicine resident performed his first arthrocentesis under POCUS guidance, achieving first-attempt success. Synovial fluid analysis revealed elevated uric acid, and urate-lowering therapy was initiated, with rapid symptom resolution. This case illustrates how POCUS provides real-time visualization that improves accuracy, reduces procedural attempts, and bolsters novice operator confidence. Incorporating POCUS-guided arthrocentesis into residency training may enhance procedural proficiency, expedite diagnosis, and improve patient outcomes.