Question

Knee pain severe pain in right knee fill like want to pop backwards and loss of strenght in legs

Answer 1

Make an appointment with your doctor if your knee pain was caused by a particularly forceful impact or if it's accompanied by -

• Significant swelling
• Redness
• Tenderness and warmth around the joint. 

Your doctor may suggest - Rest, NSAIDs, Physical Therapy & May suggests unloader knee brace(https://www.healthguideline.net/2019/07/best-unloader-knee-brace-for.html).

Answer 2

Till now what are the treatments you have gone Through? and what are the tests advised  by doctor?

 Consult with other doctor with previous medical history.