Annotation: Back pain is one of the most common complaints of diseases of people of working age, the elderly and senile age. The human spine carries almost the entire weight of a person. It consists of 33-34 vertebrae, which are connected by intervertebral discs. Thanks to this connection, the vertebrae can move relative to each other. The sacrum and coccyx are special parts of the spine. The sacrum is formed by five fused vertebrae, and the coccyx is a rudimentary part of the spine that does not perform a supporting function.