U need to be done an MRI of right knee. Should take Physiotherapy treatment: Ice therapy twice daily, IFT 15 mnts, Ultrasonic 7 mnts, Tens 12 mnts, will give good relief. Cupping Therapy & Dry Needling will provide almost complete relief. U have to do Statistic Quadriceps & progressive resistance exercises. Use knee brace, brand Tynor all the day time only. U may require Total Knee Replacement (Right Knee), in consultation wd Total Knee Replacement Orthopaedic Surgeon. So, meet one.