What is the superior trim line for a LSO?

The superior trim line for a lumbar-sacral orthosis (LSO) is typically positioned 1/2" to 1" above the iliac crest. This placement allows for optimal support of the lumbar spine while enabling the patient a functional range of motion. It also helps to ensure that the orthosis remains comfortably in place and does not interfere with movements at the pelvis and lower back.

Choosing a trim line that is too high, such as aligning it with the inferior angles of the scapulae, would limit the mobility of the upper body and potentially create discomfort during activities that involve trunk movement. In contrast, a trim line at the xiphoid process or umbilicus may not provide sufficient support to the lower spine, which is crucial for patients requiring an LSO. Proper placement is vital for maximizing the orthosis's effectiveness in managing conditions related to lower back instability or post-surgical recovery.