for the past two months i am having severe pain in my left knee joint. i am not able to walk even 10 feet without pain. i have contacted ortho specialist. he said liquid is formed in the joint. he prescribed evion 400 and multivitamin tablet supradyn and and advised physio therapy exercises. no x-ray was taken. what i want to know is what is meant by liquid formation in the knee joint? can it be cured? which is better allopathy or ayurveda?