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This Global Health Medical Device is designed for or implemented within resource-limited settings - Browse the devices - Add a device

Health Topic Physical disabilities
Classification Treatment
Scope Prototype
Location Asia

Problem being addressed[edit]

There are tens of thousands of amputees living in the developing world. Unfortunately, patients that live in these resource-poor areas and who lose a knee joint have few options. A titanium replacement can cost up to $10,000 and other inexpensive models are too crude to work effectively.

Detailed description of the solution[edit]

The JaipurKnee is flexible and stable, even on irregular terrain. It is comprised of five pieces of plastic, four nuts and bolts and has self-lubricating, oil-filled nylon. It does not require special tools and only takes a few hours to manufacture.

Designed by[edit]

  • Designed by: Joel Sadler and team of classmates from a design course at Stanford University.

When and where it was tested/implemented[edit]

The device costs $20 USD and is more effective than other crude models. It works effectively on rough terrain. It is currently being tested in India with a projected 100,000 devices being distributed in the next three years.


Internally generated reports[edit]

Stober, D. (2009, April 15). Cool product: $20 artificial knee for patients in the developing world. Stanford News Service: (650) 721-6965. Link available here.

Externally generated reports[edit]

Abend L, Altman A, et al. The 50 Best Inventions of 2009. Time. Link available here.