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http://dx.doi.org/10.5999/aps.2018.01375

Clinical outcomes of a low-cost single-channel myoelectric-interface three-dimensional hand prosthesis  

Ku, Inhoe (Department of Plastic and Reconstructive Surgery, Seoul National University Hospital)
Lee, Gordon K. (Division of Plastic and Reconstructive Surgery, Stanford Medical Center)
Park, Chan Yong (Department of Trauma Surgery, Wonkwang University Hospital)
Lee, Janghyuk (Beauty Plastic Surgery Clinic)
Jeong, Euicheol (Department of Plastic Surgery, SMG-SNU Boramae Medical Center)
Publication Information
Archives of Plastic Surgery / v.46, no.4, 2019 , pp. 303-310 More about this Journal
Abstract
Background Prosthetic hands with a myoelectric interface have recently received interest within the broader category of hand prostheses, but their high cost is a major barrier to use. Modern three-dimensional (3D) printing technology has enabled more widespread development and cost-effectiveness in the field of prostheses. The objective of the present study was to evaluate the clinical impact of a low-cost 3D-printed myoelectric-interface prosthetic hand on patients' daily life. Methods A prospective review of all upper-arm transradial amputation amputees who used 3D-printed myoelectric interface prostheses (Mark V) between January 2016 and August 2017 was conducted. The functional outcomes of prosthesis usage over a 3-month follow-up period were measured using a validated method (Orthotics Prosthetics User Survey-Upper Extremity Functional Status [OPUS-UEFS]). In addition, the correlation between the length of the amputated radius and changes in OPUS-UEFS scores was analyzed. Results Ten patients were included in the study. After use of the 3D-printed myoelectric single electromyography channel prosthesis for 3 months, the average OPUS-UEFS score significantly increased from 45.50 to 60.10. The Spearman correlation coefficient (r) of the correlation between radius length and OPUS-UEFS at the 3rd month of prosthetic use was 0.815. Conclusions This low-cost 3D-printed myoelectric-interface prosthetic hand with a single reliable myoelectrical signal shows the potential to positively impact amputees' quality of life through daily usage. The emergence of a low-cost 3D-printed myoelectric prosthesis could lead to new market trends, with such a device gaining popularity via reduced production costs and increased market demand.
Keywords
Artificial limbs; Amputation stump; Hand;
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