What is the ideal location for the inferior trim line of a TLSO?

The ideal location for the inferior trim line of a TLSO (Thoraco-Lumbo-Sacral Orthosis) is typically positioned 1/2" to 1" below the seating surface. This placement is crucial for several reasons that enhance both the effectiveness of the orthosis and the comfort of the patient.

Positioning the inferior trim line below the seating surface allows the orthosis to stabilize and support the lumbar and thoracic regions while accommodating normal pelvic movement during daily activities, such as sitting and standing. This placement helps to prevent excessive pressure on the gluteal area, reducing the risk of discomfort or skin breakdown that can occur if the orthosis is placed too high or too low.

In addition, an orthosis with this ideal inferior trim line location maintains the appropriate contact to provide the necessary control of spinal motion without compromising the user's mobility. This balanced support ensures that the TLSO functions effectively during transitions, such as moving from sitting to standing, which is vital for users who need to remain functional in their daily lives.

This strategy aligns with the goals of providing thoracolumbar support while allowing for necessary flexibility and movement in the pelvic region, striking an optimal balance for orthotic effectiveness and comfort.