Department of Orthopaedic Surgery, Tianjin Union Medicine Centre, Tianjin 300121, China;
Department of Orthopaedic Surgery, Tianjin Union Medicine Centre, Tianjin 300121, China;
Department of Orthopaedic Surgery, Tianjin Union Medicine Centre, Tianjin 300121, China;
Department of Orthopaedic Surgery, Tianjin Union Medicine Centre, Tianjin 300121, China;
Department of Orthopaedic Surgery, Tianjin Union Medicine Centre, Tianjin 300121, China;
Department of Orthopaedic Surgery, Tianjin Union Medicine Centre, Tianjin 300121, China;
Spinal canal; Radiography; Low back pain; Laminectomy;