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Finite element analysis of double-plate fixation using reversed locking compression-distal femoral plates for Vancouver B1 periprosthetic femoral fractures

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Title: Finite element analysis of double-plate fixation using reversed locking compression-distal femoral plates for Vancouver B1 periprosthetic femoral fractures
Authors: Takahashi, Daisuke Browse this author
Noyama, Yoshihiro Browse this author
Asano, Tsuyoshi Browse this author
Shimizu, Tomohiro Browse this author
Irie, Tohru Browse this author
Terkawi, Mohamad Alaa Browse this author
Iwasaki, Norimasa Browse this author →KAKEN DB
Keywords: Periprosthetic femoral fracture
Double plate
Vancouver B1
Finite element analysis
Locking compression-distal femoral plate
Issue Date: 13-Mar-2021
Publisher: BioMed Central
Journal Title: BMC musculoskeletal disorders
Volume: 22
Start Page: 276
Publisher DOI: 10.1186/s12891-021-04152-5
Abstract: BackgroundInternal fixation is recommended for treating Vancouver B1 periprosthetic femoral fractures. Although several fixation procedures have been developed with high fixation stability and union rates, long-term weight-bearing constructs are still lacking. Therefore, the aim of the present study was to evaluate the stability of a double-plate procedure using reversed contralateral locking compression-distal femoral plates for fixation of Vancouver B1 periprosthetic femoral fractures under full weight-bearing.MethodsSingle- and double-plate fixation procedures for locking compression-distal femoral plates were analysed under an axial load of 1,500 N by finite element analysis and biomechanical loading tests. A vertical loading test was performed to the prosthetic head, and the displacements and strains were calculated based on load-displacement and load-strain curves generated by the static compression tests.ResultsThe finite element analysis revealed that double-plate fixation significantly reduced stress concentration at the lateral plate place on the fracture site. Under full weight-bearing, the maximum von Mises stress in the lateral plate was 268 MPa. On the other hand, the maximum stress in the single-plating method occurred at the defect level of the femur with a maximum stress value of 1,303 MPa. The principal strains of single- and double-plate fixation were 0.63% and 0.058%, respectively. Consistently, in the axial loading test, the strain values at a 1,500 N loading of the single- and double-plate fixation methods were 1,274.60 11.53 and 317.33 +/- 8.03 (x 10(-6)), respectively.Conclusions The present study suggests that dual-plate fixation with reversed locking compression-distal femoral plates may be an excellent treatment procedure for patients with Vancouver B1 fractures, allowing for full weight-bearing in the early postoperative period.
Type: article
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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