In developed countries, the average birth weight of a full-term newborn is approximately 3.4 kg (71â2 lb), and is typically in the range of 2.7â4.6 kg (6.0â10.1 lb).
The Thoraco-Lumbo-Sacral Orthosis (TLSO), also called a Boston Brace, is the most common variety of scoliosis brace. It is used to treat curves in the lumbar or thoraco-lumbar spine. The brace is custom-molded from plastic to fit the childâs body.
1 Traditional metal braces are the most common type of braces. 2  These braces have a metal bracket with elastic (rubber band) ties holding the wire onto the metal brackets. 3  The second most common type of braces are self-ligating braces that do not require the need of elastic ties. 4  Instead, the wire goes through the bracket.