HEIKEL, Henrik V. A. Coalitio Calcaneo-Navicularis and Calcaneus Secundarius: A clinical and radiographic study of twenty-three patients. Acta Orthopaedica, [S. l.], v. 32, n. 1-4, p. 72–84, 1962. DOI: 10.3109/17453676208989564. Disponível em: https://actaorthop.org/actao/article/view/30435. Acesso em: 27 may. 2026.