Pelvis Model for Reconstruction with Autografted Long Bones following Hindquarter Amputation - Computational Biomechanics of the Musculoskeletal System - page 127

The finite element method is an ideal biomechanical tool because it is able to provide the details
of multiple parameters regarding stress, strain, displacement, and energy. With FE modeling and
analysis, biomechanical information can be compared between a reconstructed and normal pelvis,
and physicians and researchers can determine which operation is more biomechanically reliable or
what can be done to improve current methods. In the last five years, the number of FE studies based
on the pelvis has increased remarkably, as summarized in Table 11.1. However, studies on pelvic
reconstruction are still limited, as listed in Table 11.2.

table 11.1
Finite element models of the Pelvis and applications in the literature since 2009

year author(s) model Components objective(s)

2009 Ivanov et al. L4-S1 unites, pelvis and

ligaments

To quantify the increase in sacrum angular
motions and stress across SIJ as a function of
fused lumbar spine

2009 Majumder,

Roychowdhury, and
Pal

Pelvis, femur, soft tissue To evaluate the responses to changing body

configurations during backward fall

2009 Leung et al. Pelvic bones and ligaments,

bilateral proximate femurs

To analyze pelvic strains as a function of
interior and cortical surface bone density, and
to compare high-strain regions with common
insufficiency fracture sites

2010 Zhang et al. Pelvic bones with a cemented

acetabular cup

To develop a subject-specific FE pelvic bone
model and study the bone-cement interfacial
response in cemented acetabular replacements

2011 Eichenseer, Sybert,

and Cotton

Pelvic bones and ligaments To characterize the sacroiliac ligament strains in

response to different loads and quantify the
changes in SIJ stress and angular displacement
in response to changes in the ligament stiffness

2011 Hao et al. Pelvic bones and ligaments To study the effect of boundary conditions on

the pelvic biomechanics predictions

2011 Shim et al. Fractured pelvis,

fragment and femoral head

To measure interfragmentary movements in the
conventional open approach with plate
fixations in the acetabular fractures and
compare them; and to develop a way of
predicting interfragmentary movement

2012 Böhme et al. Fractured pelvis and

iliosacral screws

To test if patient-specific FE models can predict
implant behavior under real conditions to
avoid implant failure and secondary operation

2012 Bréaud et al. Pelvis, fat, puboprostatic

ligament, perineal
membrane, prostate, the
urinary system

To develop a computerized FE model by
digitizing the male pelvis in order to
understand the associated pelvic ring trauma
and posterior urethral trauma

2012 Kiapour et al. L3-S1, pelvic bones and

ligaments, bilateral
proximate femurs

To assess the relationship between leg length
discrepancy and the load distribution across
SIJ

2012 Kunze et al. Pelvis, acetabular implant

socket

To determine the muscle forces of the activity
of getting up from different seat heights by
multibody simulation and the evaluation of
the micro-motions at the acetabular
implant-bone interface during those activities

2012; 2013 Ghosh et al. Intact and implanted

composite hemipelvis

To assess the validity of the generation
procedure of the FE model of intact and
implanted artificial pelvises

2013 Small et al. Implanted composite

hemipelvis

To examine the combined effects of acetabular
cup orientation and stiffness and on pelvic
osseous loading

Note: SIJ: sacroiliac joint; FE: finite element.