Characterising the Mould Rectification Process for Designing Scoliosis Braces: Towards Automated Digital Design of 3D-Printed Braces

Sanz-Pena, Inigo; Arachchi, Shanika M.A.; Halwala-Vithanage, Dhammika; Mallikarachchi, Sanjaya; Kirumbara-Liyanage, Jeewantha; McGregor, Alison H.; Silva, Pujitha; Newell, Nicolas

doi:10.3390/app11104665

Cited by 8 publications

(8 citation statements)

References 32 publications

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“…20 To address this gap, research on socket interface mechanics and tissue characterization of the residual limb, as well as quantification of the manual fabrication method for different types of orthoses can potentially aid the digital design process. [21][22][23] Creative solutions have been found in other areas of health care to address the loss of physical touch in traditional workflows. In robotic surgeries, the introduction of haptic information allows the operating surgeon to feel and control the amount of force applied to different tissues during surgery, improving the effectiveness and efficiency of these surgeries.…”

Section: Theme 1: Technological Advancement and Scientific Evidencementioning

confidence: 99%

Understanding the adoption of digital workflows in orthotic & prosthetic practice from practitioner perspectives: a qualitative descriptive study

Ngan

Sivasambu

Kelland

et al. 2022

Prosthetics &Amp; Orthotics International

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Background: The implementation of digital technology (DT) in orthotics and prosthetics (O&P) has been slow despite recent research suggesting that the use of DT will continue to grow and become more prevalent within the industry. There is a need to further investigate DT in O&P practice and the current state of its use in the field.Objective: This study aimed to explore the views and experiences of practitioners using DT workflows in their O&P practice. Methods: In this qualitative descriptive study, 10 in-depth, semistructured interviews with O&P practitioners were conducted. A content analysis was performed to analyze the transcripts and identify key themes from the data.Results: The study examined the experiences of practitioners using or trying to use DT in their practices, and three key themes were identified on the implementation of digital practice: 1) technological advancement and scientific evidence; 2) marketplace, economic, and operational factors; and 3) industry mindset shift in embracing DT practice. Conclusion: A collaborative effort involving academia, healthcare institutions, vendors, and individual practitioners will be required to facilitate the widespread adoption of DT in O&P. More work is required to overcome challenges from the technical, logistical, and cultural aspects.

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Section: Theme 1: Technological Advancement and Scientific Evidencementioning

confidence: 99%

Understanding the adoption of digital workflows in orthotic & prosthetic practice from practitioner perspectives: a qualitative descriptive study

Ngan

Sivasambu

Kelland

et al. 2022

Prosthetics &Amp; Orthotics International

View full text Add to dashboard Cite

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“…Instead, Expert Systems or Knowledge-Based Systems are proposed to be suited to the prosthetic socket design problem, as they involve learning to mechanise tasks which humans already perform well. Towards automating design, Sanz-Pena et al [25] characterised rectification designs for scoliosis brace orthoses using landmarks, and Li et al [23] proposed the Analytic Hierarchy Process decision approach to determine personalised socket design 'compensations' based on multiple prosthetists' experience-based recommendations, and the residual limb's characteristics.…”

Section: Machine Learningmentioning

confidence: 99%

Characterising Residual Limb Morphology and Prosthetic Socket Design Based on Expert Clinician Practice

Dickinson

Diment

Morris³

et al. 2021

Prosthesis

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Functional, comfortable prosthetic limbs depend on personalised sockets, currently designed using an iterative, expert-led process, which can be expensive and inconvenient. Computer-aided design and manufacturing (CAD/CAM) offers enhanced repeatability, but far more use could be made from clinicians’ extensive digital design records. Knowledge-based socket design using smart templates could collate successful design features and tailor them to a new patient. Based on 67 residual limb scans and corresponding sockets, this paper develops a method of objectively analysing personalised design approaches by expert prosthetists, using machine learning: principal component analysis (PCA) to extract key categories in anatomic and surgical variation, and k-means clustering to identify local ‘rectification’ design features. Rectification patterns representing Total Surface Bearing and Patella Tendon Bearing design philosophies are identified automatically by PCA, which reveals trends in socket design choice for different limb shapes that match clinical guidelines. Expert design practice is quantified by measuring the size of local rectifications identified by k-means clustering. Implementing smart templates based on these trends requires clinical assessment by prosthetists and does not substitute training. This study provides methods for population-based socket design analysis, and example data, which will support developments in CAD/CAM clinical practice and accuracy of biomechanics research.

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“…The primary goal of such a brace is to halt the progression of spinal curvature while promoting thoracic and trunk symmetry. Typically, the brace is worn until the patient reaches skeletal maturity [2].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Model of Scoliosis Brace with Increased Utility Characteristics

Grycuk,

Mrozek

2023

Applied Sciences

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Orthoses are of critical importance in the field of medical biomechanics, particularly in the correction of spinal deformities. The objective of the current research was to improve the utility characteristics of the scoliosis brace without compromising its corrective capabilities. The orthotic shell of the Boston brace was used as the basis for this investigation. The finite element method (FEM) was used to evaluate the distribution of corrective forces through the device. The flow of force lines within the orthotic shell was determined by mapping the paths of maximum principal stresses. Areas of the device that had a negligible effect on overall stiffness were identified and material from these areas was eliminated. Minor modifications were then made to the redesigned shell to maintain its corrective stiffness. As a result of these changes, the weight of the braces was reduced without compromising its corrective stiffness. When subjected to corrective forces, the shell’s displacement patterns in the transverse plane showed minimal changes from the original model, confirming that its corrective capacity remained largely intact. This research presents an innovative methodology for orthotic design and demonstrates that structural optimization based on the mapping of maximum principal stress pathways can significantly improve device functionality. The approach outlined here holds promise for future advances in the design of various orthotic devices, thereby contributing to the advancement of the field.

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Characterising the Mould Rectification Process for Designing Scoliosis Braces: Towards Automated Digital Design of 3D-Printed Braces

Cited by 8 publications

References 32 publications

Understanding the adoption of digital workflows in orthotic & prosthetic practice from practitioner perspectives: a qualitative descriptive study

Understanding the adoption of digital workflows in orthotic & prosthetic practice from practitioner perspectives: a qualitative descriptive study

Characterising Residual Limb Morphology and Prosthetic Socket Design Based on Expert Clinician Practice

Finite Element Model of Scoliosis Brace with Increased Utility Characteristics

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