A scholar at the National Research and Technology University of Moscow, the National Steel and Iron Alloys Institute (NUST MISIS) Composite Center, has developed a self-repairing bone graft that is based on a shape memory polymer that recovers when heated locally. The original structure.
If the graft in the body is under load (usually when replacing the end bone fragments, especially on the legs), cracks are easily formed. The appearance of cracks is extremely difficult to prevent and control, but it is possible to make a graft with self-healing materials.
The center's physics-mathematics associate Dr. Fyodor Shinatov explained: "We use a polymer with shape memory properties to make a graft, which is like a spring in a gel. â€
In order to locally heat the graft without touching the surrounding tissue, special ingredients need to be added thereto. Shenatov said: "We have successfully found this ingredient, but we can only repair it at 50 degrees Celsius."
The researchers added supplemental particles to the polymer to increase its hardness. In order to achieve a heating effect, magnetic nanoparticles are also introduced therein with the aid of a magnetic field. Now they are conducting material composition tests to increase the firmness and lower the heating temperature. (Technology Daily)
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