Homo Sapiens Erectus! It is the Erectus part of Homo sapiens that is governed by the integrity or misalignment of the human spine. It is accidents and injuries, which tear loose the ligaments and tendons holding those spinal vertebrae together which allows the spine to become twisted or misaligned. The spine as the foundation of the framework of the body and whether it is misaligned determines posture.
Often the injuries causing misalignments are during childhood and the growing years. And many of them go undetected...