Improve your triangle by accessing the QL "hip hiker" muscle. When you run or walk this muscle helps your hip lift up. This stretch helps with hip pain. Ideas for stretching for lower back pain as well.
Does your knee rotate in when you do single-leg work (squats, etc)? This is an AWESOME explanation of femoral rotation, which happens to runners, lifters, etc when the glutes are UNDERactive and the hip flexors are OVERactive. A cause for shin splits and