It can be classified as postural or structural. Postural kyphosis can be caused by slouching and also by vertebral fractures. It is more commonly associated with older people, especially due to osteoporosis. Structural kyphosis is due to abnormality of the spinal structures such as vertebrae (bones of the spine), ligaments, nerve, intervertebral disc, or even muscles. The most common types are Scheuerman’s kyphosis, Congenital Kyphosis and Gibbus deformity.