Importance

Loading Importance Indicators...

Abstract

An anchoring member is provided with a shaft 2 for fastening to a bone and a head 3 for connection with a rod 10, the head being connected to the shaft and having a generally U-shaped cross-section with a base and two legs laterally defining a first channel for receiving the rod. The rod is retained in a desired position within the channel by a fastening member. In order to allow the anchoring member to be used not only with a rod of the appropriate diameter, but also with rods having smaller diameters the anchoring member comprises an insert member 13, 13' having a generally U-shaped cross-section forming a second channel 18 defined by its two free sides 14, 15 for receiving a rod 17 having a smaller diameter. The outer curvature of the U-shaped cross-section of the insert member 13, 13' is substantially equal to or slightly smaller than the internal curvature of the first channel 4.

Loading the Abstract Image...

First Claim