Fretting corrosion behavior of nitinol spinal rods in conjunction with titanium pedicle screws

详细信息    查看全文

• 作者：Elena Lukina^a ; ^b ; ^{elenaalukina@rambler.ru} ; ^{lukinaea@mati.ru} ; Mikhail Kollerov^a ; Jay Meswania^b ; Alla Khon^a ; Pavel Panin^c ; Gordon W. Blunn^b
• 关键词：Nitinol ; Fretting ; Corrosion ; Spine ; Retrieval ; Pedicle screws
• 刊名：Materials Science and Engineering: C
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：72
• 期：Complete
• 页码：601-610
• 全文大小：1882 K
• 卷排序：72

文摘

Erosions and built-up of Ti oxide on explanted Nitinol spinal rods are observed. The damage is localized in the area where rods were in contact with Ti pedicle screw. Nitinol has lower resistance to fretting corrosion compared with Ti6Al4V and CoCr. Corrosion patterns on explanted and laboratory tested Nitinol rods are similar. Nitinol rods performance improves in pedicle screws with stiffer locking mechanism.