Iam60 ys old now..i had trauma ..falling down on both of my knees at the same time while walking...idid MRI for both knees ...there was a perforation in my rt meniscus ..cartilage....and osteoarthritis...i had severe pain in my knees...doctor gave me treatment ...and said :you should change your knees by prosthesis ..iam afraid ...all cases of replacement i saw are suffering after the operation...