Brief Answer: Trauma, infection or autoimmune disease suspected Detailed Answer: Hello, Thanks for posting your queries on HealthcareMagic. Swollen knee joint and inability to bear weight suggests some kind of pathology in the joint. Is there history of fall or trauma to the joint? Trauma is the most common cause of knee injury. Other causes include infection, inflammation, autoimmune diseases etc. A couple of investigations are needed to find the cause of these symptoms. A X-ray and /or MRI of the joint will tell about whether there is fluid accumulation in the joint and the state of surrounding soft tissues. The swelling can be due to fluid accumulation. The fluid can be aspirated by performing arthroscopy. Fluid examination can determine the cause of swelling. You need to consult your orthopedician for clinical examination, investigations and further management. If you have more queries, I will be glad to answer. Dr Shailja P Wahal

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