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Evaluation of a magnesium ring device for mechanical augmentation of a ruptured ACL: Finite element analysis.

Abstract

BACKGROUND

Recently, a ring device was used for mechanical augmentation to aid the healing of ACL. In-vivo study using goat showed improved joint stability after ring repair in comparison to using biological augmentation alone. Objective of this study was to quantify the load and stress levels in the ACL and its femoral insertion site following ring repair.

METHODS

A three dimensional finite element model of a goat stifle joint was developed to find the load and stress level in the ACL and at its femoral insertion site following ring repair.

FINDINGS

Ring repair led to approximately a 50% reduction in anterior-posterior tibial translation over the model with a deficient ACL: 5.2 mm vs 10.6 mm, 4.4 mm vs 9.0 mm, and 2.9 mm vs 5.2 mm at joint flexion angles of 37°, 60° and 90° respectively. After ring repair, the in situ force in the ACL was restored to be nearly 60% of the intact ACL. The maximum Von Mises stress at the femoral insertion site was up to 71% of those for the intact ACL.

INTERPRETATION

This study offers new knowledge on the function of a ring device to mechanically augment ACL repair in order to improve its healing. Quantitative data on loading levels in the repaired ACL and its insertion site that led to its healing could be used as basis for developing novel devices to mechanically augment the healing of ACL in humans.

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  • Publisher Full Text
  • Authors+Show Affiliations

    ,

    School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Musculoskeletal Research Center, University of Pittsburgh, Pittsburgh, PA 15219, USA.

    ,

    Musculoskeletal Research Center, University of Pittsburgh, Pittsburgh, PA 15219, USA.

    ,

    School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China.

    ,

    School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China. Electronic address: ckcheng2009@gmail.com.

    Musculoskeletal Research Center, University of Pittsburgh, Pittsburgh, PA 15219, USA. Electronic address: slyw@pitt.edu.

    Source

    Clinical biomechanics (Bristol, Avon) 68: 2019 Jun 05 pg 122-127

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    31200296

    Citation

    Wang, Huizhi, et al. "Evaluation of a Magnesium Ring Device for Mechanical Augmentation of a Ruptured ACL: Finite Element Analysis." Clinical Biomechanics (Bristol, Avon), vol. 68, 2019, pp. 122-127.
    Wang H, Kang H, Yao J, et al. Evaluation of a magnesium ring device for mechanical augmentation of a ruptured ACL: Finite element analysis. Clin Biomech (Bristol, Avon). 2019;68:122-127.
    Wang, H., Kang, H., Yao, J., Cheng, C. K., & Woo, S. L. (2019). Evaluation of a magnesium ring device for mechanical augmentation of a ruptured ACL: Finite element analysis. Clinical Biomechanics (Bristol, Avon), 68, pp. 122-127. doi:10.1016/j.clinbiomech.2019.06.002.
    Wang H, et al. Evaluation of a Magnesium Ring Device for Mechanical Augmentation of a Ruptured ACL: Finite Element Analysis. Clin Biomech (Bristol, Avon). 2019 Jun 5;68:122-127. PubMed PMID: 31200296.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Evaluation of a magnesium ring device for mechanical augmentation of a ruptured ACL: Finite element analysis. AU - Wang,Huizhi, AU - Kang,Huijun, AU - Yao,Jie, AU - Cheng,Cheng-Kung, AU - Woo,Savio L-Y, Y1 - 2019/06/05/ PY - 2018/12/26/received PY - 2019/05/04/revised PY - 2019/06/04/accepted PY - 2019/6/15/pubmed PY - 2019/6/15/medline PY - 2019/6/15/entrez KW - ACL repair KW - Anterior cruciate ligament (ACL) KW - Biomechanics KW - Finite element analysis KW - Magnesium ring KW - Mechanical augmentation SP - 122 EP - 127 JF - Clinical biomechanics (Bristol, Avon) JO - Clin Biomech (Bristol, Avon) VL - 68 N2 - BACKGROUND: Recently, a ring device was used for mechanical augmentation to aid the healing of ACL. In-vivo study using goat showed improved joint stability after ring repair in comparison to using biological augmentation alone. Objective of this study was to quantify the load and stress levels in the ACL and its femoral insertion site following ring repair. METHODS: A three dimensional finite element model of a goat stifle joint was developed to find the load and stress level in the ACL and at its femoral insertion site following ring repair. FINDINGS: Ring repair led to approximately a 50% reduction in anterior-posterior tibial translation over the model with a deficient ACL: 5.2 mm vs 10.6 mm, 4.4 mm vs 9.0 mm, and 2.9 mm vs 5.2 mm at joint flexion angles of 37°, 60° and 90° respectively. After ring repair, the in situ force in the ACL was restored to be nearly 60% of the intact ACL. The maximum Von Mises stress at the femoral insertion site was up to 71% of those for the intact ACL. INTERPRETATION: This study offers new knowledge on the function of a ring device to mechanically augment ACL repair in order to improve its healing. Quantitative data on loading levels in the repaired ACL and its insertion site that led to its healing could be used as basis for developing novel devices to mechanically augment the healing of ACL in humans. SN - 1879-1271 UR - https://www.unboundmedicine.com/medline/citation/31200296/Evaluation_of_a_magnesium_ring_device_for_mechanical_augmentation_of_a_ruptured_ACL:_Finite_element_analysis L2 - https://linkinghub.elsevier.com/retrieve/pii/S0268-0033(18)31057-X DB - PRIME DP - Unbound Medicine ER -