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Three-dimensional printed prosthesis demonstrates functional improvement in a patient with an amputated thumb: A
Keun Ho Lee1, Sung Jae Kim2, Yong Ho Cha3
11 Department of Occupational Therapy, Samsung Medical Center, Seoul, Korea.
Prosthetics and Orthotics International
|December 4, 2016
Summary
This study showcases a custom 3D-printed finger prosthesis for thumb amputation, improving hand function and patient satisfaction. The 3D scanning and printing method offers a faster, cost-effective alternative to traditional prostheses.
Area of Science:
- Biomedical Engineering
- Additive Manufacturing
- Reconstructive Surgery
Background:
- Three-dimensional (3D) printing is increasingly utilized across various scientific and industrial sectors.
- A 67-year-old male patient with a right thumb amputation above the metacarpophalangeal joint required a functional prosthesis.
Observation:
- A 3D scanner captured images of both the patient's amputated right hand and intact left hand.
- The digital model of the left hand was mirrored and adapted to design a custom right thumb prosthesis.
- The prosthesis was fabricated using a 3D printer employing fused filament fabrication.
Findings:
- Post-application, the patient demonstrated improved scores on the Jebsen-Taylor hand function test and Box and Block Test.
- Patient-reported outcomes indicated high satisfaction, with most responses in the Quebec User Evaluation of Satisfaction with Assistive Technology survey being 'very satisfied'.
- The Orthotics and Prosthetics Users' Survey revealed that the prosthesis was generally perceived as 'very easy' to use.
Implications:
- The 3D scanning and printing technique provides a rapid and economical method for creating patient-specific finger prostheses.
- This approach facilitates the production of custom prostheses tailored for specific movements in amputee patients.
- The clinical relevance lies in the potential for low-cost, high-quality prosthetic solutions for individuals with limb differences.
