Can’t remember the source but it was reputable, and they said generally the spine is impacted meaning getting worse at the earlier ages and then that will level out as you get older. However, as you get older the hips would be the scores that would become worse. It was explained or I inferred that because the spine bones are more trabecular in make up versus cortical bone and vice versa for the hip. Keep in mind the femoral neck hip area versus the plain hip also is more trabecular in nature.