A protruding bag on the spine may be physiological or pathological. As a normal adult, the seventh cervical vertebra, also known as the augmentation, will form a distinct bag on the entire spine due to hypertrophic protrusion of the spinous process, at which point this is a normal physiological phenomenon. In the vast majority of cases, however, the formation of other areas is a pathological change, commonly caused by fractures and subluxations of the spine, which may result in a local bulge after a spinal fracture and a local protrusion and corresponding phase of depression after a subluxation. In addition, protruding pockets on the spine may also result from soft tissue lesions, such as infectious diseases or tuberculosis lesions.