Strain is there. Tk hot fermentation twice a day

Avoid sitting Cross legged. Avoid Squatting- Quadriceps Exercises- Lie straight, make a towel role and put it under the knee, press the keen against the role, hold it for 20 secs. Repeat 20 times twice a day. This will help relieve some pain. Core Strengthening Exercise- Straight Leg Raised With Toes Turned Outward, repeat 10 times, twice a day.

Was there any kind of twisting injury to knee in recent past? If yes plz visit ortho surgeon or least a physiotherapist to get assessed. Your pain with folding could because of some internal effusion that may be due to some mechanical trauma or any kind of internal derrangement if onset is insidious.

Start with knee pain relieving exercises . sending you the link of the same https://play.google.com/store/apps/details?id=com.technoherpes.kneepain Or you can search " knee pain relieving exercises by kavin khatri " on google playstore

There can be a menscial tear or articular cartilage wear, better to be examined by Orthopaedic doctor n get necessary investigations done and proceed accordingly

Any injury happen or twisting leg something? IF yes than visit ortho dr. Or nothing like that than meet physio for pain relief treatment and learn knee muscle strngtheining exercise and proprioception exercise. Or might be over weight and giving weight on one leg.