What is the reason for the bone in the back?

The back shows bone sound, the main reasons for the occurrence are seen in two aspects: one is found in physiological sound; the other is found in pathological sound. Physiological sound mainly occurs in adolescents during growth and development, thus causing the development of small joints in the back and the surrounding ligaments, joint capsule development is not synchronized, thus causing the contraction of small joints in the back, and there will be bone sound during activities. Pathological sound is mainly caused by cold spasm of soft tissue on the back, or contracture and stiffness caused by excessive stress traction, or cartilage degeneration and osteogenesis of small joints on the back. When moving, abnormal friction of small joints on the back will be shown, thus causing the sound of bones on the back.