What is the superior trim line for a LSO?

The superior trim line for a Lumbosacral Orthosis (LSO) is typically set 1" to 1 1/2" distal to the xiphoid process. This placement is crucial for achieving optimal support and stability in the lumbar and sacral regions while allowing for proper alignment of the spine. The positioning just below the xiphoid process helps to anchor the orthosis securely on the torso, providing the necessary compression and support to manage conditions affecting the lower back.

When considering the anatomical landmarks, it's essential to ensure that the orthosis does not infringe upon the diaphragm’s movement, which could lead to respiratory compromise. By positioning the trim line within the specified range below the xiphoid process, the orthosis provides adequate control of the lumbar spine without interfering with diaphragmatic function.

The other options, while they reference anatomical landmarks, do not fall within the typical guidelines for LSO trim lines. Setting the trim line too high could risk discomfort or interference with movement, while a location too low may not provide the necessary support to the lumbar region effectively.