Prosthetics & Orthotics Service, Foot Care & Limb Design Centre, Tan Tock Seng Hospital, Singapore.
Engineering Product Development (EPD) Pillar, Singapore University of Technology and Design, Singapore.
Prosthet Orthot Int. 2021 Feb;45(1):94-99. doi: 10.1177/0309364620948290.
Upper limb, in particular forequarter amputations, require highly customised devices that are often expensive and underutilised.
The objective of this study was to design and develop a comfortable 3D-printed cosmetic forequarter prosthetic device, which was lightweight, cool to wear, had an elbow that could lock, matched the appearance of the contralateral arm and was completely free of metal for a specific user's needs.
Device design.
An iterative user-centred design approach was used for digitising, designing and developing a functional 3D-printed prosthetic arm for an acquired forequarter amputation, while optimising the fit and function after each prototype.
The cost of the final arm was 20% less expensive than a traditionally-made forequarter prostheses in Singapore. The Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST) 2.0 survey was administered, with results indicating that the 3D-printed arm was preferred due to its overall effectiveness, accurate size, ease of use and suspension. However, durability had a lower score, and the weight of the arm was 100 g heavier than the user's current prosthesis. The technique described resulted in a precise fitting and shaped forequarter prosthesis for the user. Using the user's feedback in the iterations of the design resulted in improved QUEST survey results indicating the device was effective, easy to use, perceived as lighter and more secure than the user's traditionally-made device.
A fully customised cosmetic forequarter prosthesis was designed and developed using digital scanning, computer-aided design modelling and 3D printing for a specific user. These technologies enable new avenues for highly complex prosthetic design innovations.
上肢，特别是肩部截肢，需要高度定制的设备，这些设备通常昂贵且未得到充分利用。
本研究旨在设计和开发一种舒适的 3D 打印美容肩部假肢，这种假肢轻便、凉爽、可锁定肘部、与对侧手臂外观相匹配且完全不含金属，以满足特定用户的需求。
装置设计。
采用迭代的以用户为中心的设计方法，对手部截肢的患者进行数字化、设计和开发功能齐全的 3D 打印假肢，同时在每个原型之后优化适配性和功能。
最终手臂的成本比新加坡传统制作的肩部假肢便宜 20%。进行了魁北克用户对辅助技术满意度评估问卷（QUEST）2.0 调查，结果表明，3D 打印手臂因其整体效果、准确尺寸、易用性和悬挂而更受青睐。然而，耐用性得分较低，而且手臂的重量比患者当前的假肢重 100 克。所描述的技术为患者精确地制作了肩部假肢。在设计的迭代中使用用户的反馈，改进了 QUEST 调查结果，表明该设备效果好、使用方便、重量轻、比患者传统的设备更安全。
使用数字扫描、计算机辅助设计建模和 3D 打印为特定患者设计和开发了完全定制的美容肩部假肢。这些技术为高度复杂的假肢设计创新开辟了新途径。
