Optimization of Acetabulum Reorientation in a Periacetabular Osteotomy by Finite Element Simulation: A Preliminary Study

Liu, Li; Ecker, Timo Michael; Schumann, Steffen; Siebenrock, Klaus-Arno; Chu, Chengwen; Zheng, Guoyan (2015). Optimization of Acetabulum Reorientation in a Periacetabular Osteotomy by Finite Element Simulation: A Preliminary Study. In: Doyle, B.; Miller, K.; Wittek, A.; Nielsen, P. (eds.) 2015 Computational Biomechanics for Medicine (pp. 129-139). Springer 10.1007/978-3-319-15503-6_12

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Periacetabular osteotomy (PAO) is an effective approach for surgical treatment of hip dysplasia in young patients. The aim of PAO is to increase acetabular coverage of the femoral head and to reduce contact pressures by reorienting the acetabulum fragment after PAO. The success of PAO significantly depends on the surgeon’s experience. Previously, we have developed a computer-assisted planning and navigation system for PAO, which allows for not only quantifying the 3D hip morphology with geometric parameters such as acetabular orientation (expressed as inclination and anteversion angles), lateral center edge (LCE) angle, and femoral head coverage for a computer-assisted diagnosis of hip dysplasia but also virtual PAO surgical planning and simulation. In this paper, based on this previously developed PAO planning and navigation system, we developed a patient-specific 3D finite element (FE) model to investigate the optimal acetabulum reorientation after PAO. Our experimental results showed that an optimal position of the acetabulum can be achieved that maximizes contact area and at the same time minimizes peak contact pressure in pelvic and femoral cartilages. In conclusion, our computer-assisted planning and navigation system with FE modeling can be a promising tool to determine the optimal PAO planning strategy.

Item Type:

Book Section (Book Chapter)

Division/Institute:

04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Orthopaedic Surgery
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Liu, Li; Ecker, Timo Michael; Schumann, Steffen; Siebenrock, Klaus-Arno; Chu, Chengwen and Zheng, Guoyan

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

Publisher:

Springer

Language:

English

Submitter:

Guoyan Zheng

Date Deposited:

14 Jul 2017 16:04

Last Modified:

14 Jul 2017 16:04

Publisher DOI:

10.1007/978-3-319-15503-6_12

URI:

https://boris.unibe.ch/id/eprint/82187

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