Robert L. Assell,Brian P. Beaubien,Jeremy Thomas Carr
申请号：
US13493186
公开号：
US20120323285A1
申请日:
2012.06.11
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A bone screw including a main body portion having a proximal end and a distal end. An external threaded surface and an internal threaded surface are formed on the main body portion. The external threaded surface intersects the internal threaded surface proximate a lower surface of the external threaded surface and a lower surface of the internal threaded surface. A plurality of bone growth apertures is defined on the surface of the main body portion where the external threaded surface and the internal threaded surface are not located. The bone growth apertures comprise between about 10 percent and about 60 percent of the surface of the main body portion.
