Metal implants made from titanium or steel are commonly used to align fractured bones to ensure proper healing. However surgical removal of the metal hardware for internal fixation of broken bones may lead to complications and additional costs. The biodegradability of magnesium (Mg) and its alloys is advantageous and desirable for medical implants that only serve temporary functions during tissue healing.
Prof. Huinan Liu and her colleagues from the University of California, Riverside have developed a novel material that may be used for bioresorbable implants. The degradation rate of Mg and its alloys in the materials are controlled through the use of a functional nanocomposite coating. Nanophase ceramic/polymer composite coated Mg provides promising properties and nano-scale surface features for the use as the next-generation biodegradable implant materials. This technology would benefit both doctors and patients, as orthopedic devices made of these materials would eliminate the need for implant removal surgery.
Fig. 1A An SEM image of a PLGA coated Mg substrate
Fig. 1BAn SEM image of a nHA/PLGA coated Mg substrate
|United States Of America||Published Application||20160206788||07/21/2016||2012-115|