Knee is the largest synovial joint in the body with articulation of 3 bones, more than a dozen ligaments and tendons around it to make it stable. It needs a clinical examination to find out the cause. Problems can often arise also from spine which may cause weakness around knees or even higher in brain.
Joint Pain severe in morning may indicate inflammatory arthritis.
Next Steps
Visit an Orthopedic surgeon
Health Tips
Avoid sitting on floor, minimise stair climbing.