The former The Hills star suffered a dislocated elbow after the car she was travelling in was struck by another vehicle, and she was questioned about the incident by police officers after receiving treatment at a local medical centre, reports

Cavallari's three children, including eight-week-old daughter Saylor, were not with mum at the time of the collision, and her husband, American football star Jay Cutler, has since rushed to his wife's hospital bedside.

The news emerges weeks after the 29-year-old mourned the death of her brother, Michael, who went missing before the Thanksgiving holiday in November (15) and was subsequently found dead in Utah.