A parametric 3D printed assistive device for people with cerebral palsy - assessment of outcomes and comparison with a commercial counterpart.

This paper presents the use of a parametric design platform and 3D printing to create personalized assistive devices (ADs) for individuals with cerebral palsy, specifically a fork/spoon holder. Five subjects participated in the study, each receiving a customized device to fit their dominant hand, and they tested both the 3D printed device and a commercially available one. The devices were evaluated based on functionality and satisfaction using two standard clinical questionnaires (IPPA and QUEST 2.0). The results showed that neither the 3D printed nor the commercial device provided substantial benefits, but the questionnaires provided valuable feedback on areas for improvement. The study highlights the need for highly personalized solutions in ADs, which could be addressed by 3D printing. A configurator for generating production files from a parametric model could facilitate personalization, but a large number of model versions should be available to meet individual needs. Future research could explore clinical evaluations and guide the development of efficient and effective frameworks for digital fabrication in terms of clinically feasible AD model sourcing.

* 3D printing can be a method of creating assistive devices with dimensions fitting the user.* Standard questionnaires for measuring the effectiveness and satisfaction may efficiently identify shortcomings and suggest improvements.* Each person may have individual requirements, which calls for a large database of solutions in order to meet the person's needs.

From patient to maker - a workflow including people with cerebral palsy in co-creating assistive devices using 3D printing technologies.

Purpose: Digital fabrication, like 3D printing, is a new opportunity for rehabilitation professionals to produce customized assistive devices. It allows for empowerment and collaboration in device procurement, but practical implementations are scarcely described. We describe the workflow, discuss feasibility and propose directions for future work.Methods: We showcase a process of co-manufacturing a custom spoon handle together with two people with cerebral palsy. Our digital manufacturing process was centered around videoconferencing to remotely control the processes from design to final 3D printing. Device functionality and satisfaction were assessed using standard clinical questionnaires: the Individual Priority Problem Assessment Questionnaire (IPPA) and the Quebec User Satisfaction Assessment with Assistive Technology (QUEST 2.0).Results: IPPA was instrumental in assessing user needs and device effectiveness. QUEST revealed where to focus future design efforts.Conclusion: Involving people with disabilities in co-creation of assistive devices opens for new opportunities for healthcare providers that should be explored in depth using the described methodology. There may also be therapeutic benefits and we envisage specific actions to take in order to make it clinically viable.IMPLICATIONS FOR REHABILITATIONBest practices for co-creation of assistive devices, cost and benefits should be investigated and documented further.Standard questionnaires are useful for measuring effectiveness and satisfaction of co-created devices as well as for guiding design efforts.Co-creation may be a valuable element in therapeutic interventions as an opportunity to unfold creativity.