Journal of Medical Case Reports manuscript template 1 Stress avulsion of the tibial tuberosity after tension band wiring of a patellar fracture: a case report Michael T. Hirschmann 1 *, Björn Wind 1 , Christian Mauch 1 , Gesa Ickler 1 , Niklaus F. Friederich 1 Address: 1 Department of Orthopaedic Surgery and Traumatology, Kantonsspital Bruderholz, CH-4101 Bruderholz, Switzerland Email: michael.hirschmann@ksbh.ch *, bjoern.wind@ksbh.ch , christian.mauch@ksbh.ch , gesa.ickler@ksbh.ch , niklaus- f.friederich@unibas.ch