The vertebral body is the main bone that makes up each segment of the spine. This bone is not typically a source of problems. On occasion, however, patients can suffer from vertebral compression fractures which can be very painful. These typically occur as a result of trauma but patients may be especially prone to such fractures if they have underlying diseases (i.e. osteoporosis, metastatic cancer) that make the bones weak. These fractures are easily treated with a non-surgical procedure called a kyphoplasty.