The present invention is generally directed to orthopedic fixation devices that comprise a coupling element and a bone fastener, whereby the bone fastener can be loaded into the coupling element through the bottom of a bore in the coupling element. 6 cm in diameter; bright yellow ray florets that twist slightly as inflorescences develop; and excellent postproduction longevity with plants maintaining good substance and color for at least four weeks in an interior environment. The metal oxide layer is generated by forming a metal layer, then oxidizing the metal layer.