My wife, a working woman, aged 50, with weight of 85 kgs, has got the problem of pain under her right knee. This pain started when she tried to kick start her scooter. About ten years back she underwent an operation for tear ligament in the same leg. My question is whether this pain, persistent for about 15-20 days, is due to PFPS (femoral femoral Pain Syndrome)? I am intending to buy knee support or patellar support or both together.