A three-car accident closed Petaluma Hill Road between Laurel Drive and East Cotati Avenue for about an hour Saturday afternoon, according to the CHP and emergency dispatch.

Jamie Watanabe of Windsor had to be extricated from a silver Honda Civic that sustained significant front-end damage. Watanabe, who the CHP said was about 20, was taken by ambulance with leg and wrist injuries to Santa Rosa Memorial Hospital.

The accident occurred about 2:18 p.m. Saturday when a 2003 Honda Pilot, driven by Karyn Carillo, 66, of Petaluma, was going south on Petaluma Hill Road and veered to avoid stopped traffic, partially entering the northbound lane, where she clipped Watanabe's Civic, causing both cars to spin out, the CHP said.

Carillo's ankle was broken in the crash, the CHP said. She was taken to Kaiser Permanente Medical Center in Santa Rosa.

A third car, a 2011 Hyundai Elantra, driven by Emily Martin, 31, of Sacramento was heading south directly behind Watanabe and served to avoid the crash, hitting a large landscaping rock in the front of the Sweet Lane Wholesale Nursery. Martin did not require immediate medical attention but said her car had to be towed.

Emergency responders had to remove the Civic's front wheel and front and rear doors to get Watanabe out. The CHP said alcohol and drugs did not appear to be a contributing factor to the accident.