Three-dimensional (3D)-printed titanium sternum replacement: A case report.

After sternal tumor resection, reconstruction of chest wall defects is still a challenging part of thoracic surgery. Three-dimensional (3D)-printed titanium alloy prosthesis implants provide an effective solution. The bionic bone trabecular micropore structure, which is beneficial to the human body, increases stability and robustness of the prosthesis. Here, we report a successful case of a customized prosthesis using a 3D-printed titanium alloy to repair and reconstruct bone defects in a patient with sternal osteosarcoma who underwent radical resection of the whole sternum.