👉 The term "thoracic lumbar" refers to the region of the spine where the upper back and lower back meet. It's located between the vertebrae (vertebrae) in the spine, which are the bones that form the backbone of your body. The thoracic and lumbar regions can be divided into two main groups: the thoracic spine and the lumbar spine. The thoracic spine is composed of the cervical (neck), thoracic, and sacral vertebra
