1 Department of Orthopedics, Aarhus University Hospital Skejby, Palle Juul-Jensens Boulevard, 99 8200, Aarhus N, Denmark. laulindp@gmail.com.
2 Department of Orthopedics, Aarhus University Hospital Skejby, Palle Juul-Jensens Boulevard, 99 8200, Aarhus N, Denmark.
3 Departments of Orthopaedic Surgery and Biomedical Engineering, University of Minnesota Life Sciences, Building 700 South 10th Avenue, Minneapolis, MN, 55415, USA.