Preston BurkePreston Burke was a former Head of Cardiothoracic Surgery. He began a romantic relationship with Cristina Yang, which came under strain when Burke was shot and his right hand's nerve supply was disrupted. With his career threatened he had Yang perform some of his surgeries, a situation which resolved when Derek Shepherd repaired Burke's nerve supply. Burke and Yang continued their relationship which ultimately ended on their Wedding Day, when Burke left Yang at the altar.
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