I recently had an injury that lasted 3 months from a torn meniscus and sports arthritis per MRI. Was told scope was necessary for the repair so as a last ditch effort I ordered the shoe inserts to try and get relief..... AMAZING results, to the point I arrived to my surgical date reluctant to go cause I was feeling so much better. I so wish I had a pair for every shoe because it works beyond my wildest expectations. To put in perspective I am a 290lb runner of 20 plus years that has ran 3-6 miles a day 3-5 days a week. Even since my surgery, the inserts have assisted me in my recovery. A true must for any runner or chronic knee pain injury.