Posibleng Mga Sanhi para sa Joint Effusion Arthritis Osteoarthritis Gout Gouty Arthritis Pilay sa Bukong-bukong Torn Meniscus Polyarthritis Sprain sa Tuhod Rheumatoid Arthritis Erythema Nodosum Juvenile Rheumatoid Arthritis Polyarticular Juvenile Idiopathic Arthritis Hemophilia Oligoarthritis Hemangioma Lyme Disease Systemic Lupus Erythematosus Reiter's Syndrome Gaucher Disease Sickle Cell Disease CINCA Syndrome Hemophilia A Hypereosinophilic Syndrome Common Variable Immunodeficiency Hypogammaglobulinemia Brucellosis Hemophilia B Coccidioidomycosis Scurvy