办事指南

Vanishing bone anchors look like tiny grenades

点击量:   时间:2017-04-10 07:01:09

By Flora Graham (Image: Fraunhofer IFAM) They may look like tiny weapons, but these bone anchors are a gentle alternative to what surgeons currently use to treat ruptured tendons. The innovative implants, shown next to the tip of a match for scale, are made of iron-tricalcium phosphate, a biodegradable material that combines metal and ceramic. Like the current titanium versions, they mainly help bones heal by anchoring severed tendons. But patients have to go under the knife for a second time to have conventional implants removed – or put up with them remaining in the body. Once the new anchors have finished their work, they disappear within two years by degrading in the body. Their ceramic component also stimulates bone growth, helping the person’s body fill in the hole left as the implant breaks down. The implant, developed by the Fraunhofer Institute for Manufacturing Technology and Advanced Materials in Bremen, Germany,