This type of pain may be associated with sprain in knee joint meniscus..
Was there any injury in knee..
The pain increases due to decreased joint space while bending the knee causing excess pressure over the meniscus causing the pain.
Next Steps
You can use knee cap for support, start hot fomentation, take analgesic with anti inflammatory medicine, take
calcium and
vitamin d supplement.
You can start with Physiotherapy- Local US, SWD, Quadriceps and Hamstring strengthening exercises.
If pain doesn't subside, you may require some investigations like X ray and MRI of knee joint to identify the exact cause for pain...
Health Tips
Avoid heavy work, avoid sitting down, avoid Indian toilet, avoid stair climbing and descending ..