â Christian name â forename â given name. 1. 'first name'. Your first name is the name that was given to you when you were born. Your first name comes in front of your surname. At some point in the conversation Brian began calling Philip by his first name. In British English, people sometimes use Christian name instead of first name.
The intervertebral fusion cage is a large, hollow cylinder made of some type of metal, usually titanium. It is designed as a cage so that bone graft can be placed inside the hollow cylinder to allow a spinal fusion to occur between two vertebrae.
The vertebral column is composed of a series of 31 separate bones known as vertebrae. There are seven cervical or neck vertebrae, 12 thoracic vertebrae, and five lumbar vertebrae. The sacrum is composed of five fused vertebrae, and there are two coccygeal vertebrae which are sometimes fused (fig.1). In the normal adult there are four curvatures in the vertebral column in an anteroposterior plane. These serve to align the head with a vertical line through the pelvis (fig. 2).he sacrum is composed of five fused vertebrae, and there are two coccygeal vertebrae which are sometimes fused (fig. 1). In the normal adult there are four curvatures in the vertebral column in an anteroposterior plane.