• Laura E Diment, Mark S Thompson, and Jeroen Hm Bergmann.
• Department of Engineering Science, University of Oxford, Oxford, UK.
• Prosthet Orthot Int. 2018 Feb 1; 42 (1): 7-13.

BackgroundThree-dimensional printing provides an exciting opportunity to customise upper-limb prostheses.ObjectiveThis review summarises the research that assesses the efficacy and effectiveness of three-dimensional printed upper-limb prostheses.Study DesignSystematic review.MethodsPubMed, Web of Science and OVID were systematically searched for studies that reported human trials of three-dimensional printed upper-limb prostheses. The studies matching the language, peer-review and relevance criteria were ranked by level of evidence and critically appraised using the Downs and Black Quality Index.ResultsAfter removing duplicates, 321 records were identified. Eight papers met the inclusion criteria. No studies used controls; five were case studies and three were small case-series studies. All studies showed promising results, but none demonstrated external validity, avoidance of bias or statistically significant improvements over conventional prostheses. The studies demonstrated proof-of-concept rather than assessing efficacy, and the devices were designed to prioritise reduction of manufacturing costs, not customisability for comfort and function.ConclusionThe potential of three-dimensional printing for individual customisation has yet to be fully realised, and the efficacy and effectiveness to be rigorously assessed. Until randomised controlled trials with follow-up are performed, the comfort, functionality, durability and long-term effects on quality of life remain unknown. Clinical relevance Initial studies suggest that three-dimensional printing shows promise for customising low-cost upper-limb prosthetics. However, the efficacy and effectiveness of these devices have yet to be rigorously assessed. Until randomised controlled trials with follow-up are performed, the comfort, functionality, durability and long-term effects on patient quality of life remain unknown.

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