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  • UK hospitals use metal Additive Manufacturing to save patient limbs

    The trauma and orthopaedic team at St George’s Hospital, Stafford, UK, recently implanted a metal additively manufactured bone cage in order to save a patient’s limb after he had sustained an open fracture to his right tibia and fibula (the two bones that make up the lower leg). 

Researchers have used 3D printing to create a novel, environmentally-friendly material made of algae that has applications forproducts including photosynthetic bio-garments that could help tackle climate change.


The international team from the University of Rochester in the US and Delft University of Technology in the Netherlands used 3Dprinters to deposit living algae onto bacterial cellulose, an organic compound produced and excreted by bacteria that has manyunique mechanical properties, including flexibility, toughness and strength.


"We provide the first example of an engineered photosynthetic material that is physiclly robust enough to be deployed in real-lifeapplications," says Srikanth Balasubramanian, a postdoctoral research associate at Delft and the first author of the paper.


The combination of lving(microalgae) and nonliving(bacterial cellulose) components resulted in a unique material that is tough andresilient while also eco-friendly, biodegradable, and simple and scalable to produce.


The plant-like nature of the material means it can use photosynthesis to "feed" tself over periods of many weeks, and it is also ableto be regenerated - a small sample of the material can be grown on-site to make more materials.


The unique characteristics of the material make it ideal for a variety of applications, including new products such as artificial leaves,photosynthetic skins, or photosynthetic bio-garments.


Bio-garments made from algae would address some of the negative environmental effects of the current textle industry, theresearchers say, in that they would be high-quality fabrics that would be sustainability produced and completely biodegradable.


They would also workto purify the air by removing carbon dioxide through photosynthesis and would not need to be washed asoften as conventional garments, reducing water usage.


"Our living materials are promising because they can survive for several days with no water or nutrients access, and the materialitself can be used as a seed to grow new living materials," says Marie-Eve Aubin-Tam, an associate professor of bionanoscience atDelft.


"This opens the door to applications in remote areas, even in space, where the material can be seeded on site."


https://www.just-style.com/news/3d-printing-paves-way-for-bio-garments-made-from-algae_id141322.aspx