Hello sir,
The information provided by you is little less, I would like to know about any past injuries, or ligament tear, or fractures around the area or it could be age related too...
So for now you can go for icing if it's on the joint and swelling around it but if it's not swollen then can go for hot fermentation
Next Steps
Patient should get it checked from a physio, go for leg stretching exs, isometric strengthening for knee, manipulation to realign the joint by a trained mulligan practitioner
Health Tips
Avoid sitting with legs hanging, avoid sitting by making a lap, avoid standing for a longer duration.. Walking is always advisable,.
For more details u can contact me