3D Printed Cast Heals Bones 40% Faster, Enables Ultrasound Treatment

The cast draws inspiration from the spongy material inside bones.
Interesting Engineering
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The traditional casts offered by hospitals to cover broken bones are not the best things for convenience. After they have been on for around a week, the cast emits a bad smell from sweat and the skin underneath begins to itch horribly. Now, with this breakthrough in limb casting, breaking a bone in the future may not entail suffering for weeks on end and putting up with the traditional cast. This 3D printed cast can heal bones 40% faster thanks to ultrasound.

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This isn’t the first time that we have heard about 3D casts — the idea of them has actually been around for a couple of years.  A Turkish student, Deniz Karasahin, has taken things a step further. He is the winner of the 2014 Golden A'Design Award for 3D printed forms and products, for his Osteoid cast prototype, which relies on small ultrasonic vibrations to help speed up the time it takes the broken bone to heal by around 40%.

Low intensity pulsed ultrasound has been known for its capabilities when it comes to helping mend broken bones for around ten years. Until now, it has been difficult to utilize in case of fractures because ultrasound leads need to be on directly on the skin, over the injured bone. With casts made of plaster, this isn’t possible.

This is where the 3D printed cast comes into its own as patches of the skin are left to the open air, which would make it easier for the leads to be in contact with the skin over the bone that was broken. The Osteoid 3D printed cast has a skeletal design and this would allow the ultrasonic drivers to be built within the cast itself.

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Source: A' DesignAward

It has been said that the next step forward for the 3D printed cast is the creation of a locking mechanism that would provide protection for the limb, along with the cast. The Osteoid creator got the inspiration for the cast from the spongy material that is inside bones. The team said that the concept is lightweight and it could be tailor made, along with being available in specific colors.

At the moment the 3D printed cast remains in the prototype stage. However thanks to 3D scanning tech progressing fast, this 3D printed cast could be seen covering broken bones in a couple of years or so.

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