The development of a component to improve the loading safety of bone-anchored prostheses | QUT ePrints QUT Home Contact Home Browse About Login The development of a component to improve the loading safety of bone-anchored prostheses Pather, Shanthan, Epari, Devakara, Frossard, Laurent, Pearcy, Mark, & Burkett, Brendan (2015) The development of a component to improve the loading safety of bone-anchored prostheses. (Unpublished) Preview PDF (290kB) The development of a component to improve the loading safety of bone-anchored prostheses - eprint.pdf. Description Use of socket prostheses Currently, for individuals with limb loss, the conventional method of attaching a prosthetic limb relies on a socket that fits over the residual limb. However, there are a number of issues concerning the use of a socket (e.g., blisters, irritation, and discomfort) that result in dissatisfaction with socket prostheses, and these lead ultimately a significant decrease in quality of life. Bone-anchored prosthesis Alternatively, the concept of attaching artificial limbs directly to the skeletal system has been developed (bone anchored prostheses), as it alleviates many of the issues surrounding the conventional socket interface.Bone anchored prostheses rely on two critical components: the implant, and the percutaneous abutment or adapter, which forms the connection for the external prosthetic system (Figure 1). To date, an implant that screws into the long bone of the residual limb has been the most common intervention. However, more recently, press-fit implants have been introduced and their use is increasing. Several other devices are currently at various stages of development, particularly in Europe and the United States. Benefits of bone-anchored prostheses Several key studies have demonstrated that bone-anchored prostheses have major clinical benefits when compared to socket prostheses (e.g., quality of life, prosthetic use, body image, hip range of motion, sitting comfort, ease of donning and doffing, osseoperception (proprioception), walking ability) and acceptable safety, in terms of implant stability and infection. Additionally, this method of attachment allows amputees to participate in a wide range of daily activities for a substantially longer duration. Overall, the system has demonstrated a significant enhancement to quality of life. Challenges of direct skeletal attachment However, due to the direct skeletal attachment, serious injury and damage can occur through excessive loading events such as during a fall (e.g., component damage, peri-prosthetic fracture, hip dislocation, and femoral head fracture). These incidents are costly (e.g., replacement of components) and could require further surgical interventions. Currently, these risks are limiting the acceptance of bone-anchored technology and the substantial improvement to quality of life that this treatment offers. An in-depth investigation into these risks highlighted a clear need to re-design and improve the componentry in the system (Figure 2), to improve the overall safety during excessive loading events. Aim and purposes The ultimate aim of this doctoral research is to improve the loading safety of bone-anchored prostheses, to reduce the incidence of injury and damage through the design of load restricting components, enabling individuals fitted with the system to partake in everyday activities, with increased security and self-assurance. The safety component will be designed to release or ‘fail’ external to the limb, in a way that protects the internal bone-implant interface, thus removing the need for restorative surgery and potential damage to the bone. This requires detailed knowledge of the loads typically experienced by the limb and an understanding of potential overload situations that might occur. Hence, a comprehensive review of the loading literature surrounding bone anchored prostheses will be conducted as part of this project, with the potential for additional experimental studies of the loads during normal activities to fill in gaps in the literature. This information will be pivotal in determining the specifications for the properties of the safety component, and the bone-implant system. The project will follow the Stanford Biodesign process for the development of the safety component. 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The count includes downloads for all files if a work has more than one. More statistics... ID Code: 91432 Item Type: Other Contribution Refereed: No ORCID iD: Epari, Devakara orcid.org/0000-0002-9306-709X Frossard, Laurent orcid.org/0000-0002-0248-9589 Pearcy, Mark orcid.org/0000-0002-1108-6503 Keywords: Activities of daily living, Amputee, Biodesign, Bone-anchored prosthesis, Fixation, Implant, Load, Osseointegration, Protective Device, Safety Device, Transfemoral Pure ID: 57117439 Divisions: Past > QUT Faculties & Divisions > Faculty of Health ?? 15 - ?? Past > Institutes > Institute of Health and Biomedical Innovation Past > QUT Faculties & Divisions > Science & Engineering Faculty ?? 32 - ?? Copyright Owner: Copyright 2015 [please consult the author] Copyright Statement: This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au Deposited On: 17 Mar 2016 04:27 Last Modified: 11 Nov 2021 09:13 Export: EndNote | Dublin Core | BibTeX Repository Staff Only: item control page Home Browse research About CRICOS No. 00213J ABN 83 791 724 622 Accessibility Copyright Disclaimer Privacy Right to Information
