Design principles to increase the patient specificity of high tibial osteotomy fixation devices

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Design principles to increase the patient specificity of high tibial osteotomy fixation devices. / Kanagalingam, Sanjeevan; Shepherd, Duncan; Fernandez-Vicente, Miguel; Wimpenny, David; Thomas-Seale, Lauren.

In: Proceedings of the International Conference on Engineering Design, ICED, Vol. 2019-August, 05.08.2019, p. 917-926.

Research output: Contribution to journalConference articlepeer-review

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@article{ac547363cf364aa8b73ce8b0d5e5501b,
title = "Design principles to increase the patient specificity of high tibial osteotomy fixation devices",
abstract = "High stiffness fracture fixation devices inducing absolute stability, activate inefficient primary healing and stress shielding. Taking High Tibial Osteotomy as a representative example, review of the clinical literature and mapping the fracture healing process revealed two physically contradicting requirements, which are only partially met by current techniques. Stiffness of the fixation is required immediately after fracture, however in the remodelling phase this can cause stress shielding. Stability is required immediately after fracture, however in the ossification phase less stability is required to stimulate secondary (and more efficient) healing. This study evaluates the use of the TRIZ Inventive Design Principles to overcome these physical contradictions. Six designs concepts were evaluated, of which the Macro-Geometry stiffness modulated design was ranked the highest. This was achieved through spatial decomposition of the problem utilising the Inventive Principles of Asymmetry, Extraction and Local Quality. This study offer perspectives on how to increase the patient specificity of fixation utilising the increased topology freedom of design for additive manufacture (AM).",
keywords = "Additive Manufacturing, Biomedical design, Conceptual design, Design methodology, TRIZ",
author = "Sanjeevan Kanagalingam and Duncan Shepherd and Miguel Fernandez-Vicente and David Wimpenny and Lauren Thomas-Seale",
year = "2019",
month = aug,
day = "5",
doi = "10.1017/dsi.2019.96",
language = "English",
volume = "2019-August",
pages = "917--926",
journal = "Proceedings of the International Conference on Engineering Design, ICED",
issn = "2220-4334",
note = "22nd International Conference on Engineering Design, ICED 2019 ; Conference date: 05-08-2019 Through 08-08-2019",

}

RIS

TY - JOUR

T1 - Design principles to increase the patient specificity of high tibial osteotomy fixation devices

AU - Kanagalingam, Sanjeevan

AU - Shepherd, Duncan

AU - Fernandez-Vicente, Miguel

AU - Wimpenny, David

AU - Thomas-Seale, Lauren

PY - 2019/8/5

Y1 - 2019/8/5

N2 - High stiffness fracture fixation devices inducing absolute stability, activate inefficient primary healing and stress shielding. Taking High Tibial Osteotomy as a representative example, review of the clinical literature and mapping the fracture healing process revealed two physically contradicting requirements, which are only partially met by current techniques. Stiffness of the fixation is required immediately after fracture, however in the remodelling phase this can cause stress shielding. Stability is required immediately after fracture, however in the ossification phase less stability is required to stimulate secondary (and more efficient) healing. This study evaluates the use of the TRIZ Inventive Design Principles to overcome these physical contradictions. Six designs concepts were evaluated, of which the Macro-Geometry stiffness modulated design was ranked the highest. This was achieved through spatial decomposition of the problem utilising the Inventive Principles of Asymmetry, Extraction and Local Quality. This study offer perspectives on how to increase the patient specificity of fixation utilising the increased topology freedom of design for additive manufacture (AM).

AB - High stiffness fracture fixation devices inducing absolute stability, activate inefficient primary healing and stress shielding. Taking High Tibial Osteotomy as a representative example, review of the clinical literature and mapping the fracture healing process revealed two physically contradicting requirements, which are only partially met by current techniques. Stiffness of the fixation is required immediately after fracture, however in the remodelling phase this can cause stress shielding. Stability is required immediately after fracture, however in the ossification phase less stability is required to stimulate secondary (and more efficient) healing. This study evaluates the use of the TRIZ Inventive Design Principles to overcome these physical contradictions. Six designs concepts were evaluated, of which the Macro-Geometry stiffness modulated design was ranked the highest. This was achieved through spatial decomposition of the problem utilising the Inventive Principles of Asymmetry, Extraction and Local Quality. This study offer perspectives on how to increase the patient specificity of fixation utilising the increased topology freedom of design for additive manufacture (AM).

KW - Additive Manufacturing

KW - Biomedical design

KW - Conceptual design

KW - Design methodology

KW - TRIZ

UR - http://www.scopus.com/inward/record.url?scp=85079764212&partnerID=8YFLogxK

U2 - 10.1017/dsi.2019.96

DO - 10.1017/dsi.2019.96

M3 - Conference article

AN - SCOPUS:85079764212

VL - 2019-August

SP - 917

EP - 926

JO - Proceedings of the International Conference on Engineering Design, ICED

JF - Proceedings of the International Conference on Engineering Design, ICED

SN - 2220-4334

T2 - 22nd International Conference on Engineering Design, ICED 2019

Y2 - 5 August 2019 through 8 August 2019

ER -