INGEBRIGTSEN, R. Indications for Spinal Fusion Immediately Following Removal of Protruded Nucleus Pulposus. Acta Orthopaedica, [S. l.], v. 22, n. 1-4, p. 25–35, 1952. DOI: 10.3109/17453675208988991. Disponível em: https://actaorthop.org/actao/article/view/30909. Acesso em: 27 may. 2026.