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[2021-Vol.18-Issue 6]Application of Novel Design Bone Grafting for Treatment of Segmental Acetabular Rim Defects During Revision Total Hip Arthroplasty
Post: 2021-12-23 13:29  View:160

Journal of Bionic Engineering (2021) 18:1369–1377  https://doi.org/10.1007/s42235-021-00097-6

Application of Novel Design Bone Grafting for Treatment of Segmental Acetabular Rim Defects During Revision Total Hip Arthroplasty

Xin Zhao1  · Haowen Xue1  · Yang Sun1  · Aobo Zhang1  · Yang Liu1  · Hao Chen1  · Qian Wan1  · Jiangbo Zhang1  · Jianlin Xiao2  · Chenyu Wang3  · Qing Han1  · Jincheng Wang1 

1 Orthopaedic Medical Center, The 2nd Hospital of Jilin University, Changchun 130041, China
2 Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun 130033, China
3 Department of Plastic and Reconstructive Surgery, First Bethune Hospital of Jilin University, Changchun 130021, China

Abstract  The study aimed to develop efcient techniques with diferent novel graft structures to enhance the treatment of acetabular bone defciency. The inhomogeneous material properties Finite Element Analysis (FEA) model was reconstructed according to computed tomography images based on a healthy patient without any peri-acetabular bony defect according to the American Academy of Orthopedic Surgeons (AAOS). The FEA model of acetabular bone defciency was performed to simulate and evaluate the mechanical performances of the grafts in diferent geometric structures, with the use of fxation implants (screws), along with the stress distribution and the relative micromotion of graft models. The stress distribution mainly concentrated on the region of contact of the screws and superolateral bone. Among the diferent structures, the mortise–tenone structure provided better relative micromotion, with suitable biomechanical property even without the use of screws. The novel grafting structures could provide sufcient biomechanical stability and bone remodeling, and the mortise–tenone structure is the optimal treatment option for acetabulum reconstruction. 

Keywords Segmental defects of the acetabular rim · Bone grafting · Finite element analysis method · Structure optimization · Revision total hip arthroplasty

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Comparison of the stress distribution of different acetabular defects. Three components including pelvis, graft bone and screws were compared; the 35-mm screw and 30-mm screw were placed laterally and medially, respectively

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