Originally Posted by
Mark Rippetoe
The pain you are describing is not really hip joint pain, which is usually perceived in the crotch -- look at a skeletal anatomy chart to see the actual location of the hip joint. You are most likely feeling irritation at the greater trochanteric bursa, at the place where the femur turns the corner and where the glute complex attaches. This area is a problem once it gets inflamed, and is aggravated badly by heavy squats that are cut off just above parallel. This is because the hamstrings and adductors get left out of the job of turning the force around, since they never reach the end of there extensibility and cannot contribute efficiently to rebound. This leaves the glutes to do the whole job, and they get pissed about this. Lighten up, make sure you're deep enough, and work it back up in weight.