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VWN VR Interface Overviews: Jaipur Knee
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VR Interfaces: Jaipur Knee

Overview

Overview of Jaipur Knee
Created in 2009, the Jaipur Knee was developed in the same spirit as created the Jaipur Foot in 1971, albeit not by the same people. Created by a student team at Stanford University, as part of a course called Biomedical Device Design and Evaluation, it serves a similar purpose.

To buck the trend of high cost prosthetics, and give the possibility of a good quality, working prosthetic knee to those who need it most, regardless of their poverty level. Primarily for the third world, the ease of design and development using local materials and labour, makes it a contender for those in developed nations who could not otherwise afford a prosthetic.

The knee can be manufactured for less than 20 usd, allowing a proliferation of use, helping those who have lost the use of their knee, get back into work as swiftly as possible.

Old models of low-cost knee joints used a single-axis joint, which rotated like a door hinge. They were unstable and unsafe for India's varied terrain; the joint tended to buckle under weight, which could be physically as well as psychologically painful for a freshly fitted amputee.

To build a better model, Sadler and his team studied the mechanics of high-end titanium knee joints in the United States, which cost from $10,000 to $100,000, he said. The team also surveyed the materials used to build cheap prosthetics for developing countries. Armed with this information, the team designed a versatile knee joint made from an oil-filled nylon polymer.

The team has fitted 43 of these joints to date in India, where the team is conducting field tests to improve their model. They hope to produce 100,000 more by 2012.


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