musculoskeletal and connective tissue disorders
How To Do Knee Arthrocentesis
Tips and Tricks for Knee Arthrocentesis
Consider doing ultrasonography if there is no obvious large effusion. Additional fluid can sometimes be aspirated by applying pressure to the suprapatellar pouch and then to the popliteal space while aspirating. Note also that warmth, tenderness, and erythema may overlie an acutely inflamed arthritic joint, mimicking extra-articular infection. When trying to differentiate infectious arthritis from infection of the overlying structures (a Contraindications ), infectious arthritis is more likely with the following: Joint effusion Circumferential joint pain and capsule tenderness Pain with both gentle, passive motion and with active joint motion When inspecting fluid, consider the following: The hemarthrosis of a traumatic tap tends to be nonuniformly bloody and tends to clot. Fat within a hemarthrosis (lipohemarthrosis) is caused by an occult fracture. 