UPDATED WITH PICTURES: A car overturned on the roundabout with the A41 and Aston Clinton on Friday afternoon.
Police, fire and ambulance crews were called to the scene of the incident to release a man who was trapped in the overturned car.
He was freed and taken to Stoke Mandeville Hospital, where his condition is not thought to be life threating.
A fire service spokesman has confirmed that two vehicles were involved in the accident.
The three people in the car which did not flip over, two men and one woman, were left with minor injuries.
Emergency services were called at 12.35pm.
Aylesbury fire station manager Gary Taylor attended the incident, along with two fire engines.