30 years old - Height 5'10 - Weight 80 kgs When I stand up or squat or fold my legs and try to stand up. My right knee and leg is not able to take the load of my body. Left knee is all fine. Just to add - my vitamin D was very low 10 ng/ml and Uric Acid was high - 7.6 last month. I am only taking vitamin D weekly (60k). Please advise - I am very worries if this is just an inflammation or something serious. If you are a doctor based out of Noida - please share your contact. Thanks!