Dr. Karahan has solid experience in orthopedics and traumatology, with extensive teaching and clinical experience at Marmara University.
| 1985 – 1988 | Health Affairs Department, Ankara Metropolitan Municipality |
| 1988 – 1993 | Research Assistant, Department of Orthopedics and Traumatology, Marmara University Faculty of Medicine |
| 1993 – 1995 | Specialist Doctor, Department of Orthopedics and Traumatology, Marmara University Faculty of Medicine |
| 2007 – Present | Assistant Professor, Department of Orthopedics and Traumatology, Marmara University Faculty of Medicine |
| 1985 | Hacettepe University Faculty of Medicine |
| 1993 | Specialist, Department of Orthopedics and Traumatology, Marmara University Faculty of Medicine |
| 1998 | Associate Professor, Department of Orthopedics and Traumatology, Marmara University Faculty of Medicine |
| 2004 – Present | Professor, Department of Orthopedics and Traumatology, Marmara University Faculty of Medicine |
