Additive manufacturing of custom orthoses and prostheses—A review

Chen, Roland; Yu, Jingui; Wensman, Jeffrey; Shih, Albert J.

doi:10.1016/j.addma.2016.04.002

Cited by 207 publications

(167 citation statements)

References 47 publications

Supporting

Mentioning

161

Contrasting

Unclassified

Order By: Relevance

“…Among the materials used for AM polymers have become a main center of interest for a wide range of applications, in addition to metals [16] and ceramics [17]. Versatility and synthetic adaptability have made polymers the most used for AM processes [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Fused deposition modeling (FDM) or so-called fused filament fabrication (FFF) is one of the most popular AM processes due to its simplicity.…”

Section: Introductionmentioning

confidence: 99%

Searching for Rheological Conditions for FFF 3D Printing with PVC Based Flexible Compounds

et al. 2020

View full text Add to dashboard Cite

Rheology is proposed as a tool to explore plasticized poly(vinyl chloride) (PVC) formulations to be used in the fused filament fabrication (FFF) 3D printing process and so manufactures flexible and ductile objects by this technique. The viscoelastic origin of success/failure in FFF of these materials is investigated. The analysis of buckling of the filament is based on the ratio between compression modulus and viscosity, but for a correct approach the viscosity should be obtained under the conditions established in the nozzle. As demonstrated by small amplitude oscillatory shear (SAOS) measurements, PVC formulations have a crystallites network that provokes clogging in the nozzle. This network restricts printing conditions, because only vanishes at high temperatures, at which thermal degradation is triggered. It is observed that the analysis of the relaxation modulus G(t) is more performing than the G″/G′ ratio to get conclusions on the quality of layers welding. Models printed according to the established conditions show an excellent appearance and flexibility, marking a milestone in the route to obtain flexible objects by FFF.

show abstract

Section: Introductionmentioning

confidence: 99%

Searching for Rheological Conditions for FFF 3D Printing with PVC Based Flexible Compounds

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The authors have since produced three more prostheses using the same method and have reported high levels of patient satisfaction and a reduced cycle time compared to traditional moulding methods, with good correspondence between prosthetic and soft tissue geometries. A comprehensive review of the use of AM for production of orthoses and prostheses was recently published by Chen et al [100], in which the authors discuss the use of XCT for the purpose of data capture among other data capture technologies. The authors in the case conclude the usefulness of AM in orthotic and prosthetic production, but note a lack of an appropriate clinical and design interface, uneconomic throughput and material cost, and material strength as the current primary barriers to increased adoption.…”

Section: Use For Endoprosthetics and Orthoticsmentioning

confidence: 99%

“…Regarding the use of XCT and AM in production of endoprosthetics and orthotics, it should be noted that while XCT represents an interesting solution for data capture of internal patient geometry for endoprosthetic production, orthotic structures are more commonly produced in reference to data captured by optical scanning methods, so as to remove the radiation dose to the patient [100]. As orthotic devices do not usually require internal information and are produced to fit a patient's external geometry, this approach is generally adequate.…”

Section: Conclusion and Future Researchmentioning

confidence: 99%

X-ray computed tomography and additive manufacturing in medicine: a review

Thompson

McNally

Maskery

et al. 2017

Int. J. Metrol. Qual. Eng.

View full text Add to dashboard Cite

Abstract. The use of X-ray computed tomography (XCT) with additive manufacture (AM) within a medical context is examined in this review. The seven AM process families and various XCT scanning techniques are explained in brief, and the use of these technologies together is detailed over time. The transition of these technologies from a simple method of medical modelling to a robust method of customised implant manufacture is described, and the state-of-the-art for XCT and AM is examined in detail. XCT and AM are identified as having the potential to improve gold standards in both modelling and implant production, and in the conclusions of this review, primary barriers to the increased adoption of AM and XCT technologies are identified in reference to the main applications of XCT and AM technologies. The primary prohibitive factors generally relate to the cost of production across all of the examined applications, as well as the need for further clinical trials in surgical guidance and applications involving implantation.

show abstract

“…In literature, such method is typically applied for anatomical portions which are easy to acquire because of the absence of occlusion issues (e.g., leg, arm, forearm, and face, excluding hands and fingers) [9, 12]. High levels of customization can be achieved by following a reverse engineering approach, usually consisting of three main stages [13, 14], which are critically analyzed in [2]: (1) scanning of anatomical parts, (2) processing of the acquired geometry using CAD software, and (3) creation of the device using additive manufacturing technologies. In literature, there are a few studies which analyze the whole hand orthosis realization process [15, 16]; others concentrate on specific stages, taking anatomy acquisition as provided by suitable systems [17–19].…”

Section: Related Workmentioning

confidence: 99%

Concept and Design of a 3D Printed Support to Assist Hand Scanning for the Realization of Customized Orthosis

Baronio

Volonghi

Signoroni

2017

Applied Bionics and Biomechanics

View full text Add to dashboard Cite

In the rehabilitation field, the use of additive manufacturing techniques to realize customized orthoses is increasingly widespread. Obtaining a 3D model for the 3D printing phase can be done following different methodologies. We consider the creation of personalized upper limb orthoses, also including fingers, starting from the acquisition of the hand geometry through accurate 3D scanning. However, hand scanning procedure presents differences between healthy subjects and patients affected by pathologies that compromise upper limb functionality. In this work, we present the concept and design of a 3D printed support to assist hand scanning of such patients. The device, realized with FDM additive manufacturing techniques in ABS material, allows palmar acquisitions, and its design and test are motivated by the following needs: (1) immobilizing the hand of patients during the palmar scanning to reduce involuntary movements affecting the scanning quality and (2) keeping hands open and in a correct position, especially to contrast the high degree of hypertonicity of spastic subjects. The resulting device can be used indifferently for the right and the left hand; it is provided in four-dimensional sizes and may be also suitable as a palmar support for the acquisition of the dorsal side of the hand.

show abstract

Additive manufacturing of custom orthoses and prostheses—A review

Cited by 207 publications

References 47 publications

Searching for Rheological Conditions for FFF 3D Printing with PVC Based Flexible Compounds

Searching for Rheological Conditions for FFF 3D Printing with PVC Based Flexible Compounds

X-ray computed tomography and additive manufacturing in medicine: a review

Concept and Design of a 3D Printed Support to Assist Hand Scanning for the Realization of Customized Orthosis

Contact Info

Product

Resources

About