Arthrocentesis - Joint Fluid Analysis Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: OA, Traumatic arthritis SLE, , RF , Pseudogout (positively birefringent crystals), Gout (negatively birefringent crystals), TB arthritis, Septic arthritis #Diagnosis #Differential #Arthrocentesis #Joint #Syonvial #Fluid #Effusion #Analysis #Table #Aspiration #Pseudogout #Septic #Infective #Arthritis #Interpretation