The TeamSky rider was involved in a high-speed crash moments before the peleton broke for the bunch sprint.
The Norwegian was able to remount and complete the stage despite showing obvious signs of pain. However, subsequent medical checks have revealed a fractured scapula which has forced the 26-year-old to pull out of the remainder of the Tour.
"After the crash Edvald was taken to a local medical centre for X-rays which revealed he had a fracture of his right scapula," TeamSky doctor Alan Farrell said.
"Fortunately this doesn’t require surgery but Edvald will return home to Norway for further investigation and treatment and we look forward to seeing him racing again sometime over the summer.