Photos showed a man being carried away from the event on a stretcher, while an air ambulance was seen landing in a nearby field.
Rebel cheese rollers have been staging their own unofficial event after health and safety fears caused the official competition to be cancelled in 2010.
This year's event prompted a safety warning from the local ambulance, police and fire services, who warned they could be overwhelmed if there was a 'mass casualty incident'.
But it went ahead as planned, with Tom Kopke, a 23-year-old YouTuber from Munich, retaining the title he won last year.
by zerooskul