The D-Rev ReMotion Knee is an artificial knee joint designed for above knee amputees in the developing world. The product was selected for inclusion in WHO’s 2013 Compendium of Innovative Health Technologies for Low-Resource Settings.
Countries targeted include: Sudan, Senegal, Liberia, Guatemala, Ecuador, Uganda, Tanzania, Iraq, Pakistan, India, Indonesia
The ReMotion Knee retails for $80. Price does not include shipping and taxes Interview with representative
Goal 3: to improve and promote good health.
Restore independent mobility for above-knee amputees.
Above-knee amputees in the developing world who do not have access to the prosthetics they need. D-Rev estimates this population to be more than ~9 million people.
The ReMotion Knee is mass produced by a contract manufacturer in China.Interview with representative
D-Rev partners with in-country prosthetic providers with already established distribution channels and local expertise. Users will be able to purchase the ReMotion Knee from these providers.
Specifications for the ReMotion Knee v3 are: – Water resistant: withstands humid and wet climates, without rusting or swelling – Materials of construction: High strength polymers and stainless steel components. – Weight limit of 80kg (176lbs) – Knee Weight: 618g (22oz) – Range of motion: 160 degrees, enabling kneeling, squatting, and biking – Noise Dampening: reduces noise during walking – Works with standard prosthetic leg systems
A trained clinician is required to must custom mold the socket to fit the patient and assemble it with the other components. D-Rev partners with clinics that are staffed with prosthetics experts to provide support to patients.
Available from D-Rev.
ReMotion Knee v3 has a lifetime of 3-5 years.
D-Rev performance measures for the ReMotion Knee v3 include: – stable gait with a natural swinging motion, high range of motion and effect noise dampening – percentage of amputees fit who are still wearing their knee six months after the fitting (“Compliance Rate”) – percentage of amputees who report experiencing no mechanical failures of their knee (“Non-failure Rate”) – percentage of amputees fit who report being “satisfied” or “very satisfied” with their knee (“Satisfaction Rate”)
Targets have not been indicated.
ReMotion officially passed all ISO 10328 testing standard for lower-limb prosthetics, and has received CE mark.
The ReMotion Knee must be fitted by a trained clinician to ensure patient safety.
Standard prosthetic leg systems containing a foot, a pylon, and a socket. The knee joint is typically the most expensive and complex component of a full prosthesis.
Skilled/unskilled required ability or training necessary to construct and fit a product for a patient
% of users reporting being satisfied with the product as determined by independent patient studies
% of patients reporting daily use of the product as determined by independent patient studies
% of patients reporting comfortable use of product in independent patient studies
The ReMotion Knee meets ISO 10328 standards of wear simulation and has received CE mark. CE mark certificate is available upon request.
Field trials with prosthetic clinics. The Jakarta School of Prosthetics and Orthotics (JSPO) and PUSPADI Bali (formerly Yakkum Bali) in Indonesia fit the first patients with the knee in May 2013 and D-Rev launched a 6 month follow-up study. D-Rev aimed to learn about the effectiveness of the v3 design, what features need tweaking before full scale production, and how the knee impacts the lives of the patients. D-Rev also collected feedback from the prosthetists fitting the knee whose opinions and adoption of the knee are just as critical for success as those of the patients.
Structural analysis of the ReMotion was achieved via finite element analysis (FEA) and 1 meter drop test.
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