Unfortunately I think it’s a combination of OA and fibro with my knees. I’ve had x-rays & 2 MRI’s which is when the OA was diagnosed. One of the tips I was given by the Physio was to try a magnesium oil spray, you spray it directly on to the affected joints, just one or two to begin with then gradually increase the number of sprays. It worked really well for other people but not for me, everyone reacts differently to things. My knee pain can be very sporadic, I can hardly walk at all during a flare but on a good day it’s not nearly as bad. It grinds & makes audible crepitus noises all day when I’m active. I still walk my dog most days on average 2miles a day but up to 4 like I did today. You can insist on an MRI being requested with the NHS so I would definitely push it if I was you. I can’t pinpoint anything definite that eases my knee pain but I’m hoping the CBD will help.