lumbar: lower portion of the spine made up of 5 vertebrae; connects with the fused bones of the sacrum below.
orthotic: another name for a brace
orthotist: a medical professional who specializes in making custom molded braces.
sacral: the five vertebrae at the base of the spine that provide attachment for the iliac (hip) bones and protect the pelvic organs.
thoracic: middle portion of the spine made up of 12 vertebrae.