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the first ae in nasa stands for

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aeronautics and a commitment to

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developing the world's most advanced

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efficient aircraft

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key to the success of this effort today

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is computer modeling the ability to

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evaluate a number of factors before

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committing to a particular configuration

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recently engineers at nasa's lewis

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research center have been using these

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same modeling techniques to improve the

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design and durability of artificial

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joints

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joint replacement surgery is performed

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almost every day at places like the

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university hospitals of cleveland

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here orthopedic surgeon dr bernard

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stolberg holds a widely used artificial

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knee

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the problem is that implants like these

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currently have to be replaced every 10

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to 15 years these parts can come loose

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they can wear

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and there's a very intimate relationship

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between the implant and the bone that

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is just beginning to be explored

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nasa researchers are using their

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computer codes to come up with a design

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that will stay securely in the bone for

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a longer period of time

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these techniques also make it possible

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to custom design artificial joints

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according to aerospace engineer dale

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hopkins rather than fitting the patient

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to the implant the implant is fitted to

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the patient

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another medical development involves

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ultrasound

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originally used to detect structural

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flaws in aircraft at nasa's langley

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research center this technology is now

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enhancing the treatment of fire related

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injuries

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each year 2 million americans suffer

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serious burns 200 000 need

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hospitalization

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assessing whether a burn is second or

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third degree is crucial in determining

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proper treatment according to dr anthony

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marmaru at the medical college of

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virginia

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the faster we can make that assessment

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the easier it is going to be in terms of

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the healing process

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ultrasound used in nasa aeronautics

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research has been modified to make rapid

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accurate assessments of burn thickness

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this procedure enables doctors to

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distinguish between a second-degree burn

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that can heal naturally and the third

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degree requiring surgical skin grafting

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so again front surface

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and a very diffuse back surface and

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that's what we see when we have a very

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deep burn once left a time in a doctor's

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eye and experience burn assessment can

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now be highly accurate and instantaneous

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comparing this ultrasound technique with

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other medical procedures langley's dr

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john cantrell we have been

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exactly on the money 100 of the time

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improving the assessment of burns and

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the design of artificial joints