This chart illustrates how one's posture changes due to the different types of spinal disorders, and also explains how other diseases or disorders can cause back pain. This chart shows tumours on the spinal column, ilium, sacrum, and spinal cord, arthritis of the hip, herniated disc, fractures of the vertebrae and sacrum, and the effects of osteoporosis on bones. It also shows the anatomy of a typical vertebra and an intervertebral disc and explains the function of the intervertebral disc. It's three dimensions let you feel texture and form. It features three-dimensional images, bold titles, and clear, easy-to-read labels that make it easy and fun to learn about the body. It is made out of durable, lightweight, non-toxic, recyclable plastic that will last indefinitely. This chart has a hole at the top for easy wall hanging, and will also stand up on an easel.