I've always said thought about this
Rondo has an imbalance in his leg strength. Happened to me like a year ago. My right leg was weaker then my left leg, and cause both of my knees, back, neck, foot, and ankles to hurt. Imbalance causes all of your body to compensate, and even affects the stronger leg
What I did is one legged 90 degree lunges on my weaker leg, after that I had no more problems. My posture improved, no more pain, and even grew a couple inches. I should send Rondo a exercise tape or something lol