TLSO
Pronunciation: T-L-S-O (spelled out)
Also written as: TLSO — Thoracic–Lumbar–Sacral Orthosis
Acronym for Thoracic–Lumbar–Sacral Orthosis; a spinal brace encompassing the thoracic, lumbar, and sacral regions, used to treat conditions such as scoliosis and spinal fractures.
Full Definition
A Thoracic–Lumbar–Sacral Orthosis (TLSO) is a rigid or semi-rigid spinal orthosis that spans the thoracic, lumbar, and sacral vertebral regions. It is prescribed for conditions including adolescent idiopathic scoliosis, spinal compression fractures, and post-surgical spinal stabilisation. Editors frequently encounter 'TLSO' in orthotics prescription forms, insurance claims, and rehabilitation discharge summaries. The en dashes between anatomical levels reflect standard orthotics nomenclature. Editors should distinguish TLSO from LSO (Lumbar–Sacral Orthosis), which does not extend to the thoracic spine.
Usage
Usage note: All capitals, no periods. Spell out on first use. Note the distinction from LSO (excludes thoracic region) and CTLSO (includes cervical region). En dashes preferred between anatomical segments in formal writing.
In Context
- "The adolescent was fitted with a TLSO as part of a non-surgical management plan for idiopathic scoliosis." — Pediatric orthopaedic referral letter
- "Editors should verify that 'TLSO' is expanded to 'Thoracic–Lumbar–Sacral Orthosis' on first mention." — Editorial house style note