Document Detail

Finite element analysis of the pelvis after modular hemipelvic endoprosthesis reconstruction.
MedLine Citation:
PMID:  23318936     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The aim of this study was to investigate the biomechanics of the pelvis reconstructed with a modular hemipelvic prosthesis using finite element (FE) analysis.
METHODS: A three-dimensional FE model of the postoperative pelvis was developed and input into the Abaqus FEA software version 6.7.1. Mesh refinement tests were then performed and a force of 500 N was applied at the lamina terminalis of the fifth lumbar vertebra along the longitudinal axis of the normal pelvis and the postoperative pelvis for three positions: sitting, standing on two feet, and standing on the foot of the affected side. Stress distribution analysis was performed between the normal pelvis and postoperative pelvis at these three static positions.
RESULTS: In the normal pelvis, stress distribution was concentrated on the superior area of the acetabulum, arcuate line, sacroiliac joint, sacral midline and, in particular, the superior area of the greater sciatic notch. In the affected postoperative hemipelvis, stress distribution was concentrated on the proximal area of the pubic plate, the top of the acetabular cup, the connection between the CS-fixator and acetabular cup and the fixation between the prosthesis and sacroiliac joint.
CONCLUSIONS: Stress distribution of the postoperative pelvis was similar to the normal pelvis at three different static positions. Reconstruction with a modular hemipelvic prosthesis yielded good biomechanical characteristics.
Yong Zhou; Li Min; Yang Liu; Rui Shi; Wenli Zhang; Hui Zhang; Hong Duan; Chongqi Tu
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Publication Detail:
Type:  Case Reports; Journal Article     Date:  2013-01-15
Journal Detail:
Title:  International orthopaedics     Volume:  37     ISSN:  1432-5195     ISO Abbreviation:  Int Orthop     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-03-28     Completed Date:  2013-10-18     Revised Date:  2014-04-01    
Medline Journal Info:
Nlm Unique ID:  7705431     Medline TA:  Int Orthop     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  653-8     Citation Subset:  IM    
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MeSH Terms
Biomechanical Phenomena
Finite Element Analysis*
Image Processing, Computer-Assisted
Lumbar Vertebrae
Materials Testing
Middle Aged
Models, Anatomic
Pelvic Bones / surgery*
Prostheses and Implants*
Prosthesis Design*
Prosthesis Implantation / instrumentation*,  methods*
Pubic Bone
Sacroiliac Joint
Stress, Mechanical*
Comment In:
Int Orthop. 2013 Oct;37(10):2097-8   [PMID:  23797456 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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