| 摘要 |
A malleolar screw is made as a cylindrical rod with a threaded distal portion and a head made of a biodegradable cast magnesium based alloy for osteosynthesis, comprising zirconium, neodymium, zinc, and silver. This screw rod has a thread at the distal two-thirds, the head has a diameter of the rod not exceeding and a conical configuration. |
