1. Department for Orthopaedic and Trauma SurgeryFaculty of Medicine and University Hospital of CologneCologne Germany
2. Cologne Center for Musculoskeletal BiomechanicsFaculty of Medicine and University Hospital of CologneCologne Germany
3. Departement for Orthopedic SurgerySt. Josefs‐HospitalWiesbaden Germany
4. Institute for PathologyUniversity Hospital RegensburgRegensburg Germany
5. Institute of Biomechanics and OrthopaedicsGerman Sport University CologneCologne Germany