Reijen was in the bunch with around 50 kilometres left of the race when he was seen veering off the road and into a field.
Television images moments later showed him in a large ditch at the side of the road being attended to by the race’s medical staff.
The scene was concerning but his team allayed fears for his wellbeing with a post on their Twitter account saying: “All good! @Kielreijnen has a sore neck, but nothing broken, and will be ready to race again Sunday. # DDV.”
Alongside the comment was a photo of Reijnen, with a hospital band on his wrist, giving the thumbs up to the camera, outside the team’s hotel on the outskirts of Bruges.
Trek-Segafredo had hoped to be in contention for a good result at Dwars door Vlaanderen but, in the end, Eduard Theuns was their best finisher in 31st.
Reijnen is expected to race at this Sunday’s Gent-Wevelgem.