Integrating 3D-Printed Task-Specific Terminal Devices with a Standard Myoelectric Prosthesis in a Patient with Systemic Scleroderma and Transradial Amputation: A Case Report

Abstract

ABSTRACT – Objective – The aim of the study was to evaluate the effectiveness of personalized task-specific 3D-printed terminal devices integrated with a standard myoelectric prosthesis in improving functional independence and comfort in a patient with systemic scleroderma and transradial amputation. Methods – A 57-year-old female patient with systemic scleroderma and a left transradial amputation used the following three task-specific 3D-printed adaptive terminal devices—a sock aid, buttoning tool, and jar opener—developed using Tinkercad and fabricated with PLA via FDM printing. These devices were integrated into her pre-existing standard myoelectric prosthesis (Ottobock MyoFacil, four-channel transradial model), which the patient had already been using for daily activities. Functional outcomes were assessed using the Canadian Occupational Performance Measure, Functional Independence Measure (FIM), and visual analog scale (VAS) for pain. Results – Canadian Occupational Performance Measure scores increased from 2/10 to 7–8/10 in performance and satisfaction. Functional Independence Measure scores improved from 4 to 6, reflecting reduced need for assistance in self-care. VAS scores decreased from 7/10 to 3/10, indicating reduced pain during activities of daily living. Conclusions – The integration of low-cost, patient-specific 3D-printed terminal devices with an existing myoelectric prosthesis significantly improved function, independence, and comfort. This case supports further exploration of additive manufacturing as a complementary strategy to enhance prosthetic function in individuals with rare and complex impairments. Clinical Relevance – 3D printing offers a scalable, adaptable solution for task-specific 3D-printed terminal devices, particularly in patients with systemic comorbidities. © 2025 Lippincott Williams & Wilkins