The flight crew was anticipating light turbulence during the descent and notified the cabin and selected the fasten seatbelt sign on prior to descending from 28,000 feet. During the descent, as the flight attendants (FA) were still preparing the cabin for arrival, the turbulence increased to a level the crew categorized as moderate.

During this time, while trying to get to her seat, a FA was thrown against the 3L door and fell to the floor injuring her right ankle. The FA could not complete her duties and was assisted into the last row of seats. Another FA informed the flight crew who arranged for paramedics to meet the airplane.

The FA was transported to the hospital and diagnosed with a broken right tibia in two places.