Hi folks I've been playing tennis for many years but past 3 years or so, I'm having problems with my left arm. Yes, I'm a lefty. I simply can't straighten my arm anymore. It's locked in about 20 degrees bend when fully stretched. I've been to a sport specialist, who couldn't find anything in x-rays nor the ultrasound. I'm 52 and still relatively fit. I can play but not with the same venom as I was able in the past. Though I only play once a week nowadays, after a long session of doubles, it starts hurting badly. I can't play without using a brace anymore. This is not the usual tennis elbow. Is anybody here experiencing the same? I was putting ice, heat and held low weight in my hand with my arm stretched in attempt to make it more straight but sadly if anything, it seems like the angle is greater than say 2 years ago. I can accept the fact it's simply a worn socket and there's nothing that can be done about it but how can this be proven?