Highlights

Chula’s Engineering Develops Dynamic Prosthetic Feet with International Standards and 5 Times Less the Cost

Dynamic-Prosthetic-Feet

Thailand now has 39,647 people with disabilities, over 95% of whom are using poor-quality prosthetic feet which are heavy and do not have ankles. This can adversely affect the way they walk, as well as their lives.


High-Quality Dynamic Prosthetic Feet
High-Quality Dynamic Prosthetic Feet

The figures from the National Statistical Office of Thailand have inspired a research team from the Faculty of Engineering, Chulalongkorn University, to develop high-quality dynamic prosthetic feet which are flexible and bendable and can store energy with each step. The prosthetic feet are made from carbon fibers, making them light weight but strong and durable. Users can walk in them on rough terrains, while exercising and during a light jog. The innovation has received the ISO 10328 strength standards from Germany and has been certified with the ISO 13485 for quality. It has also been registered as a medical device with the Food and Drug Administration (FDA), been granted a petty patent, and registered in Thai SME-GP. The prosthetic feet are currently in the process of being registered with Thai Innovation, requesting the Made in Thailand certificate, and requesting for the CE Marking.

Asst. Prof. Dr. Pairat Tangpornprasert
Asst. Prof. Dr. Pairat Tangpornprasert
Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University

Asst. Prof. Dr. Pairat Tangpornprasert from the Mechanical Engineering Department, Faculty of Engineering, Chulalongkorn University, explained that the dynamic prosthetic feet have undergone clinical trials with 20 patients with disabilities and yielded highly satisfactory results. The users require approximately 2 weeks to adjust to the prosthetic feet. In comparison with the imported prosthetic feet now available in the market, the innovation has comparable qualities and efficiency but with a 5 times cheaper cost of production. This can then help reduce the high cost of prosthesis and orthosis imports. Moreover, commercial production of medical devices can expand the market overseas, leading to more generation of income, export opportunities, and the country’s competitiveness.

High-Quality Dynamic Prosthetic Feet
High-Quality Dynamic Prosthetic Feet

As an engineering lecturer with an interest in medical research, Asst. Prof. Dr. Pairat had to conduct interdisciplinary research and study, which is significant as working in a singular field may lead to difficulty in application of the research. 

“Developing dynamic prosthetic feet, which are considered a medical device, required the efforts of a network of doctors and prosthetists and orthotists sharing their expertise and interdisciplinary knowledge in order to achieve good-quality dynamic prosthetic feet that meet international standards. I am proud to have successfully produced good-quality prosthetics and helped those with disabilities to regain function of their limbs,” added Asst. Prof. Dr. Pairat. 

The dynamic prosthetic foot project was funded by the National Research Council of Thailand. It is part of the prosthesis and orthosis for the disabled project under the “New Beginnings with Research and Innovation” to commemorate the Coronation of King Rama X. 67 dynamic prosthetic feet were given to people with disabilities at over 13 hospitals. The innovation is currently being considered for government medical benefit schemes so that it may be accessible for people with disabilities, which will help improve their quality of life.

Chula’s encouragement and support for research is excellent for teachers, students, and the public.

Associate Professor Dr. Suchana Chavanich Faculty of Science, Chulalongkorn University

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