In 1995 he was promoted to doctor of medicine at the University of Cologne and also finished the United States Medical Licensing Examination (ECFMG licence), Philadelphia, Pennsylvania, U.S.
[2] Since the beginning of his university career, Krapohl has focused on microsurgery of peripheral nerves and vessels.
While working at the Cleveland Clinic Krapohl was involved in the development of animal models for transplantation of extremities and organs.
[7] When he began his work at the Military Hospital in Berlin he gradually focused on surgery of the breast.
He proved that in military guards just the impact of the carbine to the chest while exercising can induce unilateral breast growth.