Nikolov, Y., Cherkezov, N., Tenev, D., & Dimtrov, M. (2026). Limb-Salvage and Reconstruction with MUTARS Modular Endoprosthesis for Proximal Femoral Chon-drosarcoma: A Case Report. THE JOURNAL OF THE BULGARIAN ORTHOPAEDICS AND TRAUMA ASSOCIATION, 63(1), 191–197. https://doi.org/10.58542/jbota.v63i1.230