ABSTRACT
The vertebral column, or backbone, is divided into five regions, namely cervical, thoracic, lumbar, sacral, and coccygeal [74], as is schematically shown in Figure 8.1. There are 24 individual bony segments, known as vertebrae, in addition to the sacral and coccygeal ones that are fused. Each vertebra consists of an anterior body and
foramen. lies spinal canal, which is formed by the foramina of the vertebrae. Such an arrangement is shown in Figure 8.2.
