Abstract:

BACKGROUND: Bone tumors around the Ⅱ section of pelvis are difficult to treat due to complicated anatomic structures. Using computer-aided technique, the excision range and prosthesis preparation can be individualized, which may obtain notable therapeutic efficacy in treating pelvic fractures in the clinic.
OBJECTIVE: To discuss the application and the clinic effect of computer-aided technique in bone tumors therapy around the Ⅱ section of pelvis.
METHODS: The pelvis model was generated with its CT data by rapid prototyping. Simulated bone resection and reconstruction were performed on the models. Then we designed surgical extension and made hemi-pelvic. Eight cases received resection of pelvic tumor and reconstruction based on computer-aided technique. 
RESULTS AND CONCLUSION: The resection of tumor and implantation of prosthesis were easily accessible. Two cases relapsed and 1 case loosened at 2 years after operation. According to Harris scoring criteria after total hip replacement, the scores of cases were well. The simulated resection and reconstruction of bone tumors around the Ⅱ section of pelvis based on computer-aided technique makes the operation easy and reconstruction precise, which produces good clinic results and offers a good promise for the application.