thoracolumbosacral orthosis


thoracolumbosacral orthosis

an external device applied to the trunk and extending from the upper portion of the thoracic spine to the pelvis; designed to provide immobilization of the thoracic spine and thoracolumbar junction.

tho·ra·co·lum·bo·sa·cral or·tho·sis

(thōr'ă-kō-lŭm'bō-sā'krăl ōr-thō'sis) An external device applied to the trunk and extending from the upper portion of the thoracic spine to the pelvis; designed to provide immobilization of the thoracic spine.