Which abnormal condition is the accumulation of watery fluid in the joint cavity?

Which abnormal condition is the accumulation of watery fluid in the joint cavity?

• A. Rheumatoid Arthritis
• B. Hydrarthrits
• C. Rickets
• D. Epiphyseal Fracture

Answer: (B)

Hydrarthrosis is the term for a joint effusion—the accumulation of watery (synovial) fluid in the joint cavity. This happens when the joint is inflamed or injured, causing excess fluid to pool inside the space and swell the joint. The description in the question matches this exact idea: a watery fluid buildup within the joint. Rheumatoid arthritis involves autoimmune inflammation of the joints and can lead to swelling and effusion, but hydrarthrosis specifically names the fluid buildup itself. Rickets is a vitamin D deficiency that affects bone development, not joint fluid accumulation. An epiphyseal fracture is a break at the growth plate, a bone injury, not a fluid-filled joint issue.

Hydrarthrosis is the term for a joint effusion—the accumulation of watery (synovial) fluid in the joint cavity. This happens when the joint is inflamed or injured, causing excess fluid to pool inside the space and swell the joint. The description in the question matches this exact idea: a watery fluid buildup within the joint.

Rheumatoid arthritis involves autoimmune inflammation of the joints and can lead to swelling and effusion, but hydrarthrosis specifically names the fluid buildup itself. Rickets is a vitamin D deficiency that affects bone development, not joint fluid accumulation. An epiphyseal fracture is a break at the growth plate, a bone injury, not a fluid-filled joint issue.