Inclusion Criteria:  the presence of torticollis caused by congenital cervical scoliosis (defined as a Cobb angle of >10°) operation and follow-up were performed in our hospital  Exclusion Criteria:  Patients with other causes of torticollis appearance, such as muscular torticollis, ocular torticollis, neurogenic torticollis, etc. Patients with other spinal deformity or disease, such as cervical kyphosis or kyphoscoliosis, congenital deformity of middle and lower thoracic vertebra, lumbar vertebra, ankylosing spondylitis, severe ossification of cervical posterior longitudinal ligament, etc. Cervical infectious diseases, cervical primary or metastatic tumor Have a history of spinal trauma or surgery Imaging data are incomplete or of poor quality.