This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection of Bones & Joints, Subject name: Orthopaedics
Aspirated synovial fluid in septic arthritis will have- 
Select and explain. 
A. Clear color, B. High viscosity, C. Markedly increased polymorphonuclear leukocytes, D. None of the above
C: Markedly increased polymorphonuclear leukocytes
Answer: C: Markedly increased polymorphonuclear leukocytes 
Explanation: Ans. is 'c' i.e., Markedly increased polymorphonuclear leukocytes Non-inflammatory (type I)Inflammatory (type II)Septic (type III)Hemorrhagic (type IV)AppearanceYellowYellowPurulentBloodyClarityClearCloudyOpaqueOpaqueViscocityHighDecreasedDecreasedVariableCell count200-2000 (<25% PMNs)2000-75000 (>50% PMNs)>80000 (> 80% PMNs)RBC >>WBCExampleOsteoarthritis Trauma OsteonecrosisRA Reiter's syndrome SLE Gout & pseudogout Fungal arthritis TB arthritis Viral arthritisBacterial arthritisTrauma Fracture Ligament tear Hemophilia PVNS Charcot's arthritis