| 摘要 |
A bone plate with a new design that prevents the bushing from rotating and/or dislodging from the screw hole during screw insertion. The plate is provided with through-holes having internal walls with at least one flat that is configured to align with a corresponding flat provided on the outer wall of the bushing. The bushing is inserted by orienting the bushing in a direction perpendicular to the through-hole of the plate so that the center of the bushing is aligned with the center of the through-hole and the flat on the bushing is aligned with the flat on the through-hole of the bone plate. The bushing is introduced into the through hole until the centers are aligned, and then the bushing is rotated about 90 degrees so that the bushing is captured within the through-hole of the plate. Once captured, the bushing cannot rotate, dislodge from, or come out of the plate unless the bushing is turned 90 degrees. The flat on the bushing mates with the flat on the internal wall of the hole (screw hole) to prevent it from rotating within the screw hole, and avoiding the need for a bushing guide during screw insertion.
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