Custom Implants

Unwin, P; Eshraghi, Abtin

doi:10.1007/978-3-319-12943-3_14

Cited by 7 publications

(10 citation statements)

References 24 publications

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“…chemotherapeutic agents, bone growth promoters or antibiotics) is a popular new area [206,211] . Thirdly, AM fabrication lends itself well to producing low volumes of highly complex parts -this means that pediatric implants can be sized specifically and iteratively for growing pre-pubescent patients, and take into account the complexities of young and incompletely ossified bone structures [212] . However, it must also be noted that there will be a compromise between added design complexity and AM fabrication feasibility -for example, pore diameters must exceed a critical threshold to allow for the full removal of residual particles present during the build process.…”

Section: A Clinical Perspectivementioning

confidence: 99%

“…The International Organization for Standardization and ASTM International define additive manufacturing to be "the process of joining materials to make parts or objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies (ISO 17296 and ASTM F2792) [146] . A workflow for the fabrication and implantation of customized orthopedic implants occurs generally as follows [146,212] , noting that some aspects of the workflow below are under present revision;…”

Section: An Engineering Perspectivementioning

confidence: 99%

“…The most important issue in successful AM implant fabrication is satisfactory design. With new design freedoms come unique design restrictions, discussed briefly here [146,212] . To ensure the even distribution of thermal energy, part cross-sections should be larger at the bottom than at the top, if not constant -this can be achieved through intrinsic design, or through altering build orientation.…”

Section: An Engineering Perspectivementioning

confidence: 99%

See 2 more Smart Citations

Additive Manufacturing of Titanium Alloys for Orthopedic Applications: A Materials Science Viewpoint

et al. 2018

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Titanium‐based orthopedic implants are increasingly being fabricated using additive manufacturing (AM) processes such as selective laser melting (SLM), direct laser deposition (DLD), and electron beam melting (EBM). These techniques have the potential to not only produce implants with properties comparable to conventionally manufactured implants, but also improve on standard implant models. These models can be customized for individual patients using medical data, and design features, such as latticing, hierarchical scaffolds, or features to complement patient anatomy, can be added using AM to produce highly functional patient‐anatomy‐specific implants. Alloying prospects made possible through AM allow for the production of Ti‐based parts with compositions designed to reduce modulus and stress shielding while improving bone fixation and formation. The design‐to‐process lead time can be drastically shortened using AM and associated post‐processing, making possible the production of tailored implants for individual patients. This review examines the process and product characteristics of the three major metallic AM techniques and assesses the potential for these in the increased global uptake of AM in orthopedic implant fabrication.

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Section: A Clinical Perspectivementioning

confidence: 99%

Section: An Engineering Perspectivementioning

confidence: 99%

Section: An Engineering Perspectivementioning

confidence: 99%

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Additive Manufacturing of Titanium Alloys for Orthopedic Applications: A Materials Science Viewpoint

et al. 2018

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“…Only a couple of researchers have recently surveyed the 3D manufacturing technology and its applications in the manufacturing of facial implants [75,76,80,82,83]. However, they were accounted for the most part from the perspectives of radiologist, specialists, and engineers.…”

Section: Expert Opinionmentioning

confidence: 99%

A review on computer-aided design and manufacturing of patient-specific maxillofacial implants

Memon

Wang

et al. 2020

Expert Review of Medical Devices

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Introduction: Various prefabricated maxillofacial implants are used in the clinical routine for the surgical treatment of patients. In addition to these prefabricated implants, customized CAD/CAM implants become increasingly important for a more precise replacement of damaged anatomical structures. This paper reviews the design and manufacturing of patient-specific implants for the maxillofacial area. Areas covered: The contribution of this publication is to give a state-of-the-art overview in the usage of customized facial implants. Moreover, it provides future perspectives, including 3D printing technologies, for the manufacturing of patient-individual facial implants that are based on patient's data acquisitions, like Computed Tomography (CT) or Magnetic Resonance Imaging (MRI). Expert opinion: The main target of this review is to present various designing software and 3D manufacturing technologies that have been applied to fabricate facial implants. In doing so, different CAD designing software's are discussed, which are based on various methods and have been implemented and evaluated by researchers. Finally, recent 3D printing technologies that have been applied to manufacture patient-individual implants will be introduced and discussed.

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“…Only a few papers have recently reviewed the 3D printing technology and its medical applications 2,14–16. However, they were reported mainly from the perspectives of radiologists, surgeons, and engineers.…”

Section: Introductionmentioning

confidence: 99%

3D-printed patient-specific applications in orthopedics

Wong

2016

ORR

191

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With advances in both medical imaging and computer programming, two-dimensional axial images can be processed into other reformatted views (sagittal and coronal) and three-dimensional (3D) virtual models that represent a patients’ own anatomy. This processed digital information can be analyzed in detail by orthopedic surgeons to perform patient-specific orthopedic procedures. The use of 3D printing is rising and has become more prevalent in medical applications over the last decade as surgeons and researchers are increasingly utilizing the technology’s flexibility in manufacturing objects. 3D printing is a type of manufacturing process in which materials such as plastic or metal are deposited in layers to create a 3D object from a digital model. This additive manufacturing method has the advantage of fabricating objects with complex freeform geometry, which is impossible using traditional subtractive manufacturing methods. Specifically in surgical applications, the 3D printing techniques can not only generate models that give a better understanding of the complex anatomy and pathology of the patients and aid in education and surgical training, but can also produce patient-specific surgical guides or even custom implants that are tailor-made to the surgical requirements. As the clinical workflow of the 3D printing technology continues to evolve, orthopedic surgeons should embrace the latest knowledge of the technology and incorporate it into their clinical practice for patient-specific orthopedic applications. This paper is written to help orthopedic surgeons stay up-to-date on the emerging 3D technology, starting from the acquisition of clinical imaging to 3D printing for patient-specific applications in orthopedics. It 1) presents the necessary steps to prepare the medical images that are required for 3D printing, 2) reviews the current applications of 3D printing in patient-specific orthopedic procedures, 3) discusses the potential advantages and limitations of 3D-printed custom orthopedic implants, and 4) suggests the directions for future development. The 3D printing technology has been reported to be beneficial in patient-specific orthopedics, such as in the creation of anatomic models for surgical planning, education and surgical training, patient-specific instruments, and 3D-printed custom implants. Besides being anatomically conformed to a patient’s surgical requirement, 3D-printed implants can be fabricated with scaffold lattices that may facilitate osteointegration and reduce implant stiffness. However, limitations including high cost of the implants, the lead time in manufacturing, and lack of intraoperative flexibility need to be addressed. New biomimetic materials have been investigated for use in 3D printing. To increase utilization of 3D printing technology in orthopedics, an all-in-one computer platform should be developed for easy planning and seamless communications among different care providers. Further studies are needed to investigate the real clinical efficacy of 3D printings in ortho...

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Custom Implants

Cited by 7 publications

References 24 publications

Additive Manufacturing of Titanium Alloys for Orthopedic Applications: A Materials Science Viewpoint

Additive Manufacturing of Titanium Alloys for Orthopedic Applications: A Materials Science Viewpoint

A review on computer-aided design and manufacturing of patient-specific maxillofacial implants

3D-printed patient-specific applications in orthopedics

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