What is the proper width of the opening for a TLSO or LSO?

The width of the opening for a thoracic-lumbar-sacral orthosis (TLSO) or lumbar-sacral orthosis (LSO) is critical as it impacts both the effectiveness of the brace and the comfort of the patient. A gap of 1/2" to 3 1/2" is considered appropriate because this range allows for sufficient room to accommodate the patient's waist and provides a secure fit while still offering necessary spinal support.

When designing or fitting a TLSO or LSO, the gap must enable some movement for natural anatomical variations, while also being narrow enough to prevent a loose fit that could compromise the support and alignment for the spine. An adequate gap also facilitates easy donning and doffing of the orthotic device, which is essential for patient compliance and overall treatment effectiveness. This specific width aligns with clinical guidelines suggesting that openings should strike a balance between providing necessary support and ensuring patient comfort during everyday activities.

In contrast, gaps that are either too narrow or too wide can lead to various issues, such as insufficient support, discomfort, or shifting of the brace during use. Thus, the chosen width of 1/2" to 3 1/2" optimally meets these criteria.