Emergency services were called to a collision involving a van and car.
It happened at just after 10am on Tuesday on Bierton Road in Aylesbury.
One appliance and crew from Aylesbury attended.
The firefighters provided immediate emergency care to one woman, injured, before passing her into the care of South Central Ambulance Service.
One man was out of the vehicle he had been travelling in, uninjured, before they arrived.
The firefighters assisted Thames Valley Police in making the scene safe.
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Council invests more than £725,000 to support communities with the cost of living
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It comes as part of a wider commitment to tackle violence against women and girls.
Bucks Council invest £2.25 million in new drone testing facility
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A418 Closed between Wingrave Crossroads and Wing
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Fundraiser in memory of Bucks woman reaches £15,000
Becca Bullock's family started the fundraiser to create a small woodland where they could remember her.
Lib Dems win in Bucks town by-election
The Chesham and Amersham branch say the victory sends a clear message to Conservative-led Bucks Council.
Plans for defibrillator and bleed control kit in Princes Risborough approved
Bucks Council granted permission this week.
