I have just been diagnosed with Patellar Tendinitis by my physio, I was running in a 10k at the weekend, nothing to out of the ordinary as far as course ,distance etc then as i was coming to the finish line i felt a pop in my left knee. The initial pain was very uncomfortable then within a minute or two the pain had gone, i sat down and took in some fluids then got up with no discomfort at all. As usual i began to trot to warm down " THEN WALLOP " as soon as i put all my weight onto my left leg it gave way, feeling as though a mini explosion had taken place below my kneecap. Again within a minute the pain had gone, Once home and ice pack applied i felt very little pain in the knee, walked up the stairs ( no problem )then coming down with my weight on one leg (left ) it went again.I had to wait until this morning (Wednesday) to see the physio, as soon as i gave her the details she diagnosed Patellar Tendinitis, after moving the leg around and standing on one leg (left) she gave me ultra sound and told me to take a mild anti-antinflamatry, i need to go back in 5 days, She says that with a gentle rubbing exercise and regular ultra-sound i should be up and running ( well trotting )in a couple of weeks. It has only been three days but if i had any hair i would be pulling it out, will keep you posted, anyone else in the same position at the moment??