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.
Types. 1  Traditional metal wired braces are stainless-steel and are sometimes used in combination with titanium. Traditional metal braces are the most common type of braces. These braces have a metal bracket with elastic (rubber band) ties holding the wire onto the metal brackets. The second-most common type of braces are self-ligating braces that do not require elastic ties. Instead, the wire goes through the bracket. Often with this type of braces, treatment time is reduced, there is less pain on the teeth, and fewer adjustments are required than with traditional braces.