The Mitchelton-Scott rider has fractured her clavicle, scapula and eye socket.
She announced the news via Twitter.
The 29-year-old was looking forward to Ardennes week with its three Women's WorldTour races Amstel Gold, Flèche Wallonne and Liege-Bastogne-Liege suiting her riding style.
At this stage the required recovery time is not yet known.
Watch the rest of Ardennes week on SBS:
- Fleche-Wallone LIVE,: Wednesday 18 April, 2230-0030 AEST SBS Viceland and streaming online
- Liège-Bastogne-Liège LIVE, Sunday 22 April, 2200-0130 AEST and streaming online
