Objective The Patients with pelvic tumors were treated with tumor resection,hemi-pelvic allografting or artificial hemi-pelvic replacement for the improvement of their life quality.Methods Seven cases of pelvic tumor ...Objective The Patients with pelvic tumors were treated with tumor resection,hemi-pelvic allografting or artificial hemi-pelvic replacement for the improvement of their life quality.Methods Seven cases of pelvic tumor were treated with wide resection and hemi-pelvic allografting,and 35 cases with resection of pelvic tumors and artificial hemi-pelvic replacement.Results These 42 cases were all successfully operated upon without operative mortality.The results of long term following-up of 2.5 to 12 years(mean 5.4 years)showed that the increased and satisfactory functional recovery(50.0%).Conclusion Hemi-pelvic allografting or artificial hemi-pelvic replacement after wide resection of pelvic tumors can improve the survival rate of patients,as well as reconstruction of the pelvis and the hip joint with satisfactory function.展开更多
Custom-made pelvic prostheses are normally employed to reconstruct the biomechanics of the pelvis for improving patient＇s life quality. However, due to the large demand of biomechanical performance around the pelvic ...Custom-made pelvic prostheses are normally employed to reconstruct the biomechanics of the pelvis for improving patient＇s life quality. However, due to the large demand of biomechanical performance around the pelvic system, the customized prosthesis needs to be studied for its strength and stability. A hemi-pelvic finite element model, including a custom-made prosthesis and the surrounded main ligaments, was created to study the strength and stability of the system. Based on the developed finite element model, the relationship between the pre-stress of the screws and the biomechanical performance of the reconstructed pelvis was investigated. Results indicate that the pre-stress should not exceed 1000 N during surgery in order to prevent fatigue fractures from happening to screws. Moreover, four screws were removed from the pelvic system without affecting the fixing stability of the system, which provide surgical guidance for surgeons in terms of safety and fixation.展开更多
文摘Objective The Patients with pelvic tumors were treated with tumor resection,hemi-pelvic allografting or artificial hemi-pelvic replacement for the improvement of their life quality.Methods Seven cases of pelvic tumor were treated with wide resection and hemi-pelvic allografting,and 35 cases with resection of pelvic tumors and artificial hemi-pelvic replacement.Results These 42 cases were all successfully operated upon without operative mortality.The results of long term following-up of 2.5 to 12 years(mean 5.4 years)showed that the increased and satisfactory functional recovery(50.0%).Conclusion Hemi-pelvic allografting or artificial hemi-pelvic replacement after wide resection of pelvic tumors can improve the survival rate of patients,as well as reconstruction of the pelvis and the hip joint with satisfactory function.
基金This work was supported by the Program of the National Natural Science Foundation of China （Grant Nos. 51205303 and 51323007）, the Fundamental Research Funds for the Central Universities, the Research Fund for the Doctoral Program of Higher Education of China （RFDP）, and the Program of International Scientific ＆ Technological Cooperation and Exchange Planning of Shaanxi Province （Grant No. 2017KW-ZD-02）.
文摘Custom-made pelvic prostheses are normally employed to reconstruct the biomechanics of the pelvis for improving patient＇s life quality. However, due to the large demand of biomechanical performance around the pelvic system, the customized prosthesis needs to be studied for its strength and stability. A hemi-pelvic finite element model, including a custom-made prosthesis and the surrounded main ligaments, was created to study the strength and stability of the system. Based on the developed finite element model, the relationship between the pre-stress of the screws and the biomechanical performance of the reconstructed pelvis was investigated. Results indicate that the pre-stress should not exceed 1000 N during surgery in order to prevent fatigue fractures from happening to screws. Moreover, four screws were removed from the pelvic system without affecting the fixing stability of the system, which provide surgical guidance for surgeons in terms of safety and fixation.
