A rigid TLSO controls which of the following areas?

A rigid TLSO, or thoracolumbosacral orthosis, is designed to provide support and stability to the thoracic, lumbar, and sacral regions of the spine. By encompassing these areas, the TLSO effectively limits movement and supports the natural alignment of the spine, which is particularly beneficial in treating conditions such as scoliosis, post-operative recovery, or severe back pain.

The thoracic region includes the upper and middle back, which would align with the cervical, sacral, and dorsal regions mentioned in the options. The key aspect of a rigid TLSO is its comprehensive coverage from the thoracic region down to the sacral area, ensuring stability and control in these critical sections of the spine.

In contrast, options that exclude any of these components miss the full range of support that a rigid TLSO offers, as they do not extend adequately to address the thoracic or dorsal regions that are included in this specific type of orthosis. This comprehensive coverage is crucial in providing effective support and facilitating recovery or management of spinal conditions. Hence, the correct answer encompasses the larger distribution of support that a rigid TLSO provides.