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Research ArticleBiomechanics

Biomechanics of the Sacroiliac Joint: Anatomy, Function, Biomechanics, Sexual Dimorphism, and Causes of Pain

Ali Kiapour, Amin Joukar, Hossein Elgafy, Deniz U. Erbulut, Anand K. Agarwal and Vijay K. Goel
International Journal of Spine Surgery February 2020, 14 (s1) S3-S13; DOI: https://doi.org/10.14444/6077
Ali Kiapour
1Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedics, The University of Toledo, Toledo, Ohio
2Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
PHD
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Amin Joukar
1Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedics, The University of Toledo, Toledo, Ohio
MS
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Hossein Elgafy
1Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedics, The University of Toledo, Toledo, Ohio
MD
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Deniz U. Erbulut
1Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedics, The University of Toledo, Toledo, Ohio
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Anand K. Agarwal
1Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedics, The University of Toledo, Toledo, Ohio
MD
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Vijay K. Goel
1Engineering Center for Orthopaedic Research Excellence (E-CORE), Departments of Bioengineering and Orthopaedics, The University of Toledo, Toledo, Ohio
PHD
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    Figure 1

    Articular surfaces of the sacroiliac joint.10

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    Figure 2

    (a) Posterior view, (b) anterior view and (c) sacroiliac joint cut in transverse plane. 1, 2: superior and inferior iliolumbar ligaments, respectively; 3: sacrospinous ligament; 4: sacrotuberous ligament; 5: posterior sacroiliac ligaments; 6: anterior sacroiliac ligaments; 7: sacroiliac joint; 8: interosseous ligament.11

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    Figure 3

    (a) Pelvis free-body diagram due to gravity. Trunk weight (Fg) and hip joint forces (Fv). (b) Free-body diagram of the self-bracing effect of the sacroiliac joint. Sacroiliac joint reaction force: normal (Fn) and tangential (Ff), ligament or muscle force (Fl), and hip joint force (Fv).14

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    Figure 4

    Pelvis 6 degrees of movement and lumbosacral pivot point, (a) coronal plane, (b) sagittal plane.27

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    Figure 5

    Comparison of the female and male pelvis: (top) brim (inlet) and (bottom) pelvic outlet.37

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    Figure 6

    Finite element models of male (left) and female (right) of spine, pelvis, and femur.

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International Journal of Spine Surgery: 14 (s1)
International Journal of Spine Surgery
Vol. 14, Issue s1
1 Feb 2020
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Biomechanics of the Sacroiliac Joint: Anatomy, Function, Biomechanics, Sexual Dimorphism, and Causes of Pain
Ali Kiapour, Amin Joukar, Hossein Elgafy, Deniz U. Erbulut, Anand K. Agarwal, Vijay K. Goel
International Journal of Spine Surgery Feb 2020, 14 (s1) S3-S13; DOI: 10.14444/6077

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Biomechanics of the Sacroiliac Joint: Anatomy, Function, Biomechanics, Sexual Dimorphism, and Causes of Pain
Ali Kiapour, Amin Joukar, Hossein Elgafy, Deniz U. Erbulut, Anand K. Agarwal, Vijay K. Goel
International Journal of Spine Surgery Feb 2020, 14 (s1) S3-S13; DOI: 10.14444/6077
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  • Article
    • ABSTRACT
    • BACKGROUND
    • ANATOMY
    • FUNCTION AND BIOMECHANICS
    • RANGE OF MOTION
    • SEXUAL DIMORPHISM
    • CAUSES OF SIJ PAIN
    • OVERALL SUMMARY
    • Footnotes
    • REFERENCES
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Keywords

  • sacroiliac joint
  • anatomy
  • Biomechanics
  • sexual dimorphism
  • causes of pain
  • surgery

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