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Determination of stress and displacement on human composite pelvis under static and dynamic loading

J. Beneš, L. Kunz, J. Liška, J. Šrám, M. Krbec, V. Džupa, M. Křivohlávek, T. Návrat

. 2022 ; 236 (7) : 951-959. [pub] 20220520

Language English Country England, Great Britain

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc22025365

This case study describes the experimental determination of displacements and stresses on a composite model of a pelvis that was modified to represent a healthy intact pelvic ring. The modified model was stressed statically up to 1750 N to simulate standing on one leg and also cyclically to model walking. For two different model settings in the loading machine the values of displacements and stresses at the pelvic ring were determined. The two different settings correspond to two different loading vectors applied on the pelvic ring, boundary conditions and degrees of freedom. The experimentally determined values of displacements in both settings are very similar and in accordance with the knowledge on the behaviour of a real human pelvis. The modified model is thus suitable for testing of newly developed implants for pelvis treatment and experimental determination of displacements and stresses in pelvic ring which are caused by application of implants.

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$a This case study describes the experimental determination of displacements and stresses on a composite model of a pelvis that was modified to represent a healthy intact pelvic ring. The modified model was stressed statically up to 1750 N to simulate standing on one leg and also cyclically to model walking. For two different model settings in the loading machine the values of displacements and stresses at the pelvic ring were determined. The two different settings correspond to two different loading vectors applied on the pelvic ring, boundary conditions and degrees of freedom. The experimentally determined values of displacements in both settings are very similar and in accordance with the knowledge on the behaviour of a real human pelvis. The modified model is thus suitable for testing of newly developed implants for pelvis treatment and experimental determination of displacements and stresses in pelvic ring which are caused by application of implants.
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$a Šrám, Jaroslav $u Regional Hospital Liberec, Liberec, Czech Republic
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$a Krbec, Martin $u Department of Orthopaedics and Traumatology, Third Faculty of Medicine of Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
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$a Džupa, Valér $u Department of Orthopaedics and Traumatology, Third Faculty of Medicine of Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
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$a Křivohlávek, Martin $u Regional Hospital Liberec, Liberec, Czech Republic
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