The relationship between loading history and proximal femoral diaphysis cross-sectional geometry

Sirpa Niinimäki, Nathaniel Narra, Laura Härkönen, Shinya Abe, Riku Nikander, Jari Hyttinen, Christopher Knüsel, Harri Sievänen

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)

    Abstract

    Objectives: We investigated the relationship between loading history and bone biomechanical properties used in physical activity reconstructions. These bone properties included bone bending and torsional strength (J), cortical area (CA), the direction of the major axis (theta angle), and element shape ratios determined from cross sections of standardized bone length. In addition, we explored the applicability of anatomically determined cross sections. Methods: Our material consisted of hip and proximal thigh magnetic resonance images of Finnish female athletes (N = 91) engaged in high-jump, triple-jump, endurance running, swimming, power-lifting, soccer and squash; along with a group of active non-athlete individuals (N = 20). We used regression analysis for size-adjustment, and the extracted residuals were then used to compare differences in the bone properties between groups. Results: We found that triple-jumpers, soccer players, and squash players had the greatest values in CA and J, swimmers and non-athletes had the smallest, whereas high-jumpers, power-lifters, and endurance runners exhibited interim values. No between-the-group differences in element shape ratios or theta angles were found. We found that influences of activity were similar regardless of whether standardized length or anatomically determined cross sections were used. Conclusions: Extreme (triple-jump) and directionally inconsistent loading (soccer and squash) necessitate a more robust skeleton compared to directionally consistent loading (high-jump, power-lifting, and endurance running) or non-impact loading (swimming and non-athletes). However, not all of these relationships were statistically significant. Thus, information gained about physical activity using bone properties is informative but limited. Accounting for the limitations, the method is applicable on fragmented skeletal material as anatomically determined cross sections can be used.

    Original languageEnglish
    Article numbere22965
    JournalAmerican Journal of Human Biology
    Volume29
    Issue number4
    DOIs
    Publication statusPublished - 1 Jul 2017
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Anatomy
    • Ecology, Evolution, Behavior and Systematics
    • Anthropology
    • Genetics

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