Description: The term ‘lumbosacral’ refers to the anatomical region that encompasses the lower back and the sacrum, which is the triangular bone located at the base of the spine. This area is crucial for mobility and support of the human body, as it connects the spine to the pelvis. The lumbosacral region consists of the lumbar vertebrae, which are five in total, and the sacrum, formed by the fusion of five sacral vertebrae. This area is responsible for bearing the weight of the body in an upright position and allows for a wide range of movements, such as flexion, extension, and rotation of the torso. Additionally, the lumbosacral region houses important nerves that branch out to the lower limbs, making it a key area for motor and sensory function of the legs. The health of the lumbosacral region is vital, as issues such as herniated discs, low back pain, or sciatica can significantly affect a person’s quality of life. Therefore, the term ‘lumbosacral’ not only has an anatomical meaning but also implies considerable clinical relevance in the fields of medicine and physical therapy.