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 spine is composed of many bones called vertebrae, which are separated by tough pads (called intervertebral discs) intended to reduce shock and friction. When these discs degenerate due to age or injury, they can rupture, allowing the gelatinous material within to seep into the spaces between vertebrae.