Arch Plast Surg.
2019 Jul;46(4):303-310. 10.5999/aps.2018.01375.
Clinical outcomes of a low-cost single-channel myoelectric-interface three-dimensional hand prosthesis
- Affiliations
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- 1Department of Plastic and Reconstructive Surgery, Seoul National University Hospital, Seoul, Korea.
- 2Division of Plastic and Reconstructive Surgery, Stanford Medical Center, Stanford, CA, USA.
- 3Department of Trauma Surgery, Wonkwang University Hospital, Iksan, Korea.
- 4Beauty Plastic Surgery Clinic, Seoul, Korea.
- 5Department of Plastic Surgery, SMG-SNU Boramae Medical Center, Seoul, Korea. ecjeong@snu.ac.kr
- KMID: 2459655
- DOI: http://doi.org/10.5999/aps.2018.01375
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.
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