This treatment is being suggested on bases of the information provided. However I would like to examine & investigate you  in detail. -Your x Ray's look to be normal. -Control  Hypertension, Diabetes or  metabolic disorder, if there is any. -Any way it may be tried, --. Dolokind Plus (Mankind) [Aceclofenac100 mg +Paracetamol 350 mg] 1 tab. OD & SOS. X 5 days. --. Caldikind plus  (Mankind) 1 tab OD x 10 days. -(You may need help of your local doctor to get these medicines.) --. Fomentation with warm water. Let the part not be exposed to cold. --. Sleep on a hard bed with soft bedding. --. Use no pillow under the head. --. Avoid painful acts & activities. -- .Do mild exercises for the affected part. --.(Take help of physiotherapist or you can visit my you tube channel Dr NC Gupta Yoga Simplified). YouTube link: https://www.youtube.com/watch?v=tY8RpRrv05g&t=9s, https://www.youtube.com/watch?v=fAYhFcmo0Mw&t=52s --Do not ignore, let it not become beginning of a major problem. --Do ask for a detailed treatment plan. Kindly make sure, there is no allergy to any of 6 medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. --I hope, I have solved your problem to your satisfaction.  Dr N C Gupta MS (ortho)

17yr old with knee pains and swelling. You have rule our rheumatoid arthritis and ligament tear. So you need some blood test like RA FACTOR IgM and antiCCP ANTIBodies and MRI KNEE. Doesn’t look like it is something very rare. Take a call To see someone physically or online.

I may need more information to comment on your condition