Authors (including presenting author) :
Tse YH(1)
Affiliation :
(1)Prosthetics and Orthotics Department, Prince of Wales Hospital
Introduction :
Amputees expect their custom-made prosthesis not only can regain mobility but also have a cosmetic restoration for rebuilding their self-image and social resilience. Although a conventional polyurethane flexible cosmetic foam cover with nylon stocking is the most common option for prosthetic appearance in Hong Kong, there are critical disadvantages: 1) it makes the prosthetist harder to examine the prosthesis. 2) it degrades and affects the normal function of other prosthetic components over time. 3) it does not have any cleaning solution and causes a hygienic problem. 4) its appearance of symmetry is completely depending on the experiences of prosthetists. 5) it does not involve any unique features and design participation of patients. Therefore, new materials and designs for the prosthesis cosmetic covers are necessary to enhance the service quality.
Objectives :
To apply 3D printing in prosthesis cosmetic cover for 1) facilitating the prosthetic examination. 2) improving the hygiene and durability of the prosthesis. 3) enhancing the appearance of symmetry. 4) allowing amputees to participate in their unique prosthetic design.
Methodology :
The contours of the sound side and prosthesis were scanned by the MSoft BodyScan scanner at first. The scanned 3D models were then imported to Rodin4D Neo and Cube for merging, mirroring, and design processes. After that, the prosthesis cosmetic cover was 3D printed with PLA filament.
Result & Outcome :
A total of 7 male or female amputees have joined the service since June 2022. The majority of feedback from the patients is that the anatomical contour and appearance symmetry of the artificial limb are consistent and improved when compared to conventional cosmetic foam covers. The amputees can also request a unique design pattern and color based on their preferences. Moreover, the 3D printed prosthesis cosmetic covers are combined with a magnetic closure system, which promotes the prosthetist to have an easy way to access the prosthesis and shortens the long service waiting time for patients. Additionally, the amputees can maintain good prosthetic hygiene and have regular cleaning which benefits from the water resistance and slow degradation of PLA filament. Besides, the 3D printing material costs can be nearly 40% lower than the conventional one. Therefore, the application of 3D printing in prosthesis cosmetic covers brings an economic advantage to patients as well.
