But Haydon was not needed as a surgeon at the field hospital in Fond Parisien where he spent two weeks with five other Medical Center volunteers and 300 patients. Instead, his expertise was applied to patients who had already received orthopedic surgery for severe crush injuries suffered in the earthquake, surgeries that were sometimes rushed in less than ideal conditions in the days following the disaster. Haydon focused on giving these patients the follow-up care that they had lacked, making sure that they were not suffering from post-surgical complications and putting them on track to a healthy recovery.