Dataset Information

Biomechanical evaluation of high tibial osteotomy plate with internal support block using finite element analysis.

ABSTRACT:

Background/objective

High tibial osteotomy (HTO) is a common treatment for medial knee arthrosis. However, a high rate of complications associated with a plate and a significant loss of correction have been reported. Therefore, an internal support block (ISB) is designed to enhance the initial stability of the fixation device that is important for successful bone healing and maintenance of the correction angle of the osteotomy site. The purpose of this study was performed to examine if an internal support block combined with a plate reduces the stress on the plate and screw area.

Methods

Finite element models were reconstructed following three different implant combinations. Two loading conditions were applied to simulate standing and initial sit-to-stand postures. Data analysis was conducted to evaluate the axial displacement of the posteromedial tibial plateau, which represents the loss of the posteromedial tibial plateau in clinical observation. Moreover, the stresses on the bone plate and locking screws were evaluated.

Results

Compared to the TomoFix plate, the ISB reduced the axial displacement by 73% and 76% in standing and initial sit-to-stand loading conditions, respectively. The plate with an ISB reduced stress by 90% on the bone plate and by 73% on the locking screw during standing compared to the standalone TomoFix plate. During the initial sit-to-stand loading condition, the ISB reduced the stress by 93% and 77% on the bone plate and the locking screw, respectively.

Conclusion

The addition of the PEEK block showed a benefit for structural stability in the osteotomy site. However, further clinical trials are necessary to evaluate the clinical benefit of reduced implant stress and the internal support block on the healing of the medial bone tissue.

SUBMITTER: Yang JC

PROVIDER: S-EPMC7906299 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Publications

Biomechanical evaluation of high tibial osteotomy plate with internal support block using finite element analysis.

Yang Jesse Chieh-Szu JC Lin Kuan-Yu KY Lin Hsi-Hsien HH Lee Oscar K OK

PloS one 20210225 2

<h4>Background/objective</h4>High tibial osteotomy (HTO) is a common treatment for medial knee arthrosis. However, a high rate of complications associated with a plate and a significant loss of correction have been reported. Therefore, an internal support block (ISB) is designed to enhance the initial stability of the fixation device that is important for successful bone healing and maintenance of the correction angle of the osteotomy site. The purpose of this study was performed to examine if a ...[more]

PMID: 33630875

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Dataset Information

Biomechanical evaluation of high tibial osteotomy plate with internal support block using finite element analysis.

Background/objective

Methods

Results

Conclusion

Publications

Biomechanical evaluation of high tibial osteotomy plate with internal support block using finite element analysis.

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