Impact loading history modulates hip fracture load and location: A finite element simulation study of the proximal femur in female athletes

Shinya Abe, Nathaniel Narra Girish, Riku Nikander, Jari Hyttinen, Reijo Kouhia, Harri Sievänen

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)


    Sideways falls impose high stress on the thin superolateral cortical bone of the femoral neck, the region regarded as a fracture-prone region of the hip. Exercise training is a natural mode of mechanical loading to make bone more robust. Exercise-induced adaptation of cortical bone along the femoral neck has been previously demonstrated. However, it is unknown whether this adaption modulates hip fracture behavior. The purpose of this study was to investigate the influence of specific exercise loading history on fall-induced hip fracture behavior by estimating fracture load and location with proximal femur finite element (FE) models created from magnetic resonance images (MRI) of 111 women with distinct exercise histories: 91 athletes (aged 24.7 ± 6.1 years, >8 years competitive career) and 20 women as controls (aged 23.7 ± 3.8 years). The athletes were divided into five groups based on typical loading patterns of their sports: high-impact (H-I: 9 triple-jumpers and 10 high jumpers), odd-impact (O-I: 9 soccer and 10 squash players), high-magnitude (H-M: 17 power-lifters), repetitive-impact (R-I: 18 endurance runners), and repetitive non-impact (R-NI: 18 swimmers). Compared to the controls, the H-I, O-I, and R-I groups had significantly higher (11–26%, p < 0.05) fracture loads. Also, the fracture location in the H-I and O-I groups was significantly more proximal (7–10%) compared to the controls. These results suggest that an exercise loading history of high impacts, impacts from unusual directions, or repetitive impacts increases the fracture load and may lower the risk of fall-induced hip fracture.
    Original languageEnglish
    Pages (from-to)136-143
    Number of pages8
    JournalJournal of Biomechanics
    Publication statusPublished - 25 Jul 2018
    Publication typeA1 Journal article-refereed


    • Bone strength
    • finite element modeling
    • Exercise
    • falling
    • femoral neck

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Public Health, Environmental and Occupational Health
    • Biomedical Engineering


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