Updated on December 1, 2023

·

Created on August 27, 2015

ReMotion Knee V3

Upcoming Update

Artificial knee joint designed for above-knee amputees in the developing world

Developed By
  1. D-Rev
Tested By
  • Exponent Research Center, and Hexagon Metrology Labs
Content Partners
Unknown

Author

Product Description

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.

Target SDGs

SDG 3: Good Health and Well-Being

Market Suggested Retail Price

$80.00

Target Users (Target Impact Group)

Household, Community

Distributors / Implementing Organizations

D-Rev and partner prosthetics providers, specifically BMVSS in India.

Competitive Landscape

Direct competitors include AT-Knee and Jaipur Foot.

Manufacturing/Building Method

The ReMotion Knee is mass produced by a contract manufacturer in China.Interview with representative

Intellectural Property Type

Patent

User Provision Model

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.

Distributions to Date Status

The ReMotion Knee became commercially available in December 2015. Field trials included deployment in three countries with 103 amputees wearing the v3. As of April 2015, 6,800 patients have been fitted with the v3 predecessor JaipurKnee by BMVSS.

Craftsmanship required

Skilled prosthetisist

Patient satisfaction

86%

Patient compliance

Unknown

Comfort

Unknown

Materials

Acetal (polyoxymethylene) and stainless steel

Water resistant (yes/no)

Yes

Amputation level

Transfemoral

Weight (kg)

0.618 kg

Design Specifications

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 80 kg (176 pounds) - Knee Weight: 618 g (22 oz) - Range of motion: 160 degrees, enabling kneeling, squatting, and biking - Noise Dampening: reduces noise during walking - Works with standard prosthetic leg systems

Product Schematics

Technical Support

A trained clinician is required to 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.

Replacement Components

Available from D-Rev

Lifecycle

ReMotion Knee v3 has a lifetime of 3-5 years.

Manufacturer Specified Performance Parameters

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.

Vetted Performance Status

ReMotion officially passed all ISO 10328 testing standard for lower-limb prosthetics and has received CE mark.

Safety

The ReMotion Knee must be fitted by a trained clinician to ensure patient safety.

Complementary Technical Systems

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.

Compliance with regulations

The ReMotion Knee meets ISO 10328 standards of wear simulation and has received CE mark. CE mark certificate is available upon request.

Evaluation methods

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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