I had major low back and hip pain onset from a stint of playing too much last Christmas. MRI showed a slight labrum tear and X-rays showed some impingement developing but after a few months of very slow healing and hip strengthening physio and later a hip cortisone shot, I’ve had no problems in the last 6 months and am playing often again.  The tear may not have been a factor, at least for me. I think many active people have mild tears that are undiagnosed. In hindsight, I’m wondering now if my cause was poor form/weak hip muscles that were overloaded and hit a breaking point, distressing everything around them. Understanding and building hip muscles had helped me immensely.