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Conference Paper: Finite Element Analysis in Repairing Distal Femoral Bone Loss in Revision Total Knee Arthroplasty

TitleFinite Element Analysis in Repairing Distal Femoral Bone Loss in Revision Total Knee Arthroplasty
Authors
Issue Date2013
PublisherHong Kong Academy of Medicine Press.
Citation
The 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), Hong Kong, China, 23-24 November 2013. In the Abstracts of the 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), 2013, p. 37, abstract no. 4.8 How to Cite?
AbstractIntroduction: Distal femoral bone loss is often encountered in revision total knee arthroplasty (TKA). Cement, cement with screw reinforcement, and metal augments are choices for repair. The present study was conducted to determine whether cement with screw reinforcement can increase the initial stability than cement only, and the optimal size of defect to repair. Methods: Three-dimensional finite element models of TKA were constructed. Five groups of block-shaped bone defect of 4, 6, 8, 10, and 12 mm height in the distal medial femoral condyle were simulated. Three conditions of treatment options of cement (group 1), cement with screw reinforcement (group 2), and metal augment (group 3) were simulated to repair the bone defect. Loading and boundary condition were simulated to reflect the real situation. The displacement between the bone-cement interface, and maximum shear stress of the bone-cement interface were investigated. Results: Whatever the defect size, group 1 had the highest maximum bone-cement micromotion than group 2, followed by group 3. In defects of larger than 6 mm, the displacement in group 1 exceeded the threshold of loosening. In defect of 12 mm, the displacement in group 2 exceeded the threshold of loosening. The maximum shear stress of group 3 was lower than group 2, followed by group 1. Discussion and Conclusion: Cement with screw reinforcement showed better initial stability than cement only when defect was larger than 6 mm. Our study provides evidence for the use of cement with screw in repairing distal bone loss of > 6 mm in revision TKA.
DescriptionConference Theme: Defying the Aging Spine
Concurrent Free Papers 4: Hips and Knees I
Persistent Identifierhttp://hdl.handle.net/10722/204331

 

DC FieldValueLanguage
dc.contributor.authorQiu, Yen_US
dc.contributor.authorYan, CHen_US
dc.contributor.authorLu, WWen_US
dc.contributor.authorChiu, PKYen_US
dc.date.accessioned2014-09-19T22:41:15Z-
dc.date.available2014-09-19T22:41:15Z-
dc.date.issued2013en_US
dc.identifier.citationThe 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), Hong Kong, China, 23-24 November 2013. In the Abstracts of the 33rd Annual Congress of the Hong Kong Orthopaedic Association (HKOA), 2013, p. 37, abstract no. 4.8en_US
dc.identifier.urihttp://hdl.handle.net/10722/204331-
dc.descriptionConference Theme: Defying the Aging Spine-
dc.descriptionConcurrent Free Papers 4: Hips and Knees I-
dc.description.abstractIntroduction: Distal femoral bone loss is often encountered in revision total knee arthroplasty (TKA). Cement, cement with screw reinforcement, and metal augments are choices for repair. The present study was conducted to determine whether cement with screw reinforcement can increase the initial stability than cement only, and the optimal size of defect to repair. Methods: Three-dimensional finite element models of TKA were constructed. Five groups of block-shaped bone defect of 4, 6, 8, 10, and 12 mm height in the distal medial femoral condyle were simulated. Three conditions of treatment options of cement (group 1), cement with screw reinforcement (group 2), and metal augment (group 3) were simulated to repair the bone defect. Loading and boundary condition were simulated to reflect the real situation. The displacement between the bone-cement interface, and maximum shear stress of the bone-cement interface were investigated. Results: Whatever the defect size, group 1 had the highest maximum bone-cement micromotion than group 2, followed by group 3. In defects of larger than 6 mm, the displacement in group 1 exceeded the threshold of loosening. In defect of 12 mm, the displacement in group 2 exceeded the threshold of loosening. The maximum shear stress of group 3 was lower than group 2, followed by group 1. Discussion and Conclusion: Cement with screw reinforcement showed better initial stability than cement only when defect was larger than 6 mm. Our study provides evidence for the use of cement with screw in repairing distal bone loss of > 6 mm in revision TKA.-
dc.languageengen_US
dc.publisherHong Kong Academy of Medicine Press.-
dc.relation.ispartofAnnual Congress of the Hong Kong Orthopaedic Association (HKOA)en_US
dc.rightsAnnual Congress of the Hong Kong Orthopaedic Association (HKOA). Copyright © Hong Kong Academy of Medicine Press.-
dc.titleFinite Element Analysis in Repairing Distal Femoral Bone Loss in Revision Total Knee Arthroplastyen_US
dc.typeConference_Paperen_US
dc.identifier.emailYan, CH: yanchoi@hku.hken_US
dc.identifier.emailLu, WW: wwlu@hku.hken_US
dc.identifier.emailChiu, PKY: pkychiu@hkucc.hku.hken_US
dc.identifier.authorityYan, CH=rp00303en_US
dc.identifier.authorityLu, WW=rp00411en_US
dc.identifier.authorityChiu, PKY=rp00379en_US
dc.identifier.hkuros235773en_US
dc.identifier.hkuros240332-
dc.identifier.spage37, abstract no. 4.8en_US
dc.identifier.epage37, abstract no. 4.8en_US
dc.publisher.placeHong Kong, China-

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