There are several common causes of spinal deformities: First, there may be pathological fractures of the spine. Pathological fractures are due to severe osteoporosis, or to spinal tuberculosis. The former is due to excessive bone destruction caused by osteoporosis, which subsequently produces a reduction in bone strength, and thus a fracture of the spine when the patient performs normal activities. These fractures result in a kyphosis-like deformity of the spine. The latter is due to the destruction of spinal bone caused by tuberculosis infection, which in turn leads directly to deformity of the spine. Second, there may be the effect of scoliosis, due to genetic-related factors, resulting in abnormalities in the physiological curvature of the spine and corresponding bending and rotation in all directions in three dimensions, resulting in deformation of the spine. Third, there may be the impact of poor posture, such as patients have poor sitting and standing posture, may cause postural scoliosis. It may also be caused by old spinal injuries, such as old spinal fractures, dislocations, etc.