Ever the fashion plate, Susan Sarandon was sporting a new accessory at Wednesday’s New York premiere of HBO’s biopic about right-to-die activist Jack Kevorkian, You Don’t Know Jack: a black foot bandage and crutches.

The cause? “Break dancing,” the Oscar winner told reporters in jest, before finally coming clean – and revealing that she fell while in Port-au-Prince on a recent mercy mission to St. Damien Children’s Hospital, along with Demi Moore and other stars on behalf of Artists for Peace and Justice, as the island still recoves from the devastating Jan. 12 earthquake.

“I was in Haiti and it’s the rainy season and I slipped. I mean, it’s a very boring story,” said Sarandon, 63. “It happened the night before I left. But I would prefer to say it was from break dancing or surfing or soccer. It still hurts, but it’s nothing.”

As for what Sarandon saw on her trip, “It was overwhelming, really, and very moving,” she said, admitting that she was especially touched by the children. “I’m hoping that the trip and everybody that went on it will in some way renew people’s commitment when they understand what’s going on.”

Sarandon’s visit did not mark her first contact with the pediatric hospital, which offers free medical care to Haitian children. “We had done a benefit at [SPiN New York, the ping-pong club in which she is an investor], and we sent the money to St. Damien’s, so it was great to be able to go down and recommit.”