[Clinical Significance of Hip Rotation Center Location after Reconstruction with Modular Hemipelvic Prostheses for Pelvic Tumor].

Objective: To investigatethe clinical significance of hip rotation center location after reconstruction with modular hemipelvic prostheses for periacetabula tumors.

Methods: Forty-two patients who received periacetabular tumor resection and reconstruction with modular hemipelvic prosthesis between January 2004 and January 2014 in our institute were included. Postoperative complications, function (measured by MSTS score), survival rate and recurrence rate were analyzed.

[The study on three-dimension finite element analysis of the stress distribution in the mandible bone around dental implants].

Objective: The aim of this study was to investigate how to model an accuracy 3-dimension Finite Element Analysis (3D-FEA) model.

Methods: Based on computed tomography (CT) scan data of a woman, a 3D finite element model of the first molar on the left was rebuilt by computer imagines process and computer aided design (CAD). Analysis of the stress distribution on a cylinder dental implant and in the bone around it was conducted.