The world's first human heart transplant operation was performed eight months later, on 3 December 1967. With the assistance of his brother Marius and 30 others, Dr. Christiaan Barnard performed the nine-hour operation on Louis Washkansky, a 55-year-old man suffering from diabetes and heart disease.
This marked eight months before the world's first human-to-human heart transplant was performed on December 3, 1967. Dr. Christiaan Barnard, along with his brother Marius and thirty others, successfully completed a nine-hour operation on Louis Washkansky, a 55-year-old man who had been suffering from diabetes and heart disease.