TY - JOUR T1 - Fatigue fracture of an uncemented Zweymüller femoral stem at the neck–shoulder junction JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2020-236328 VL - 13 IS - 11 SP - e236328 AU - Thijs Andreas Nijenhuis AU - Stijn Albertus Andreas Nicolaas Bolink AU - Roy Bernardus Gerardus Brokelman Y1 - 2020/11/01 UR - http://casereports.bmj.com/content/13/11/e236328.abstract N2 - A fracture through the neck of the femoral stem in total hip arthroplasty is extremely rare. We report a neck fracture of a cementless Zweymüller stem, one of the most implanted stems worldwide. According to our knowledge, this is the first thorough case description of a neck fracture of a cementless Zweymüller stem. The case concerns a 53-year-old man, with a body weight of 103 kg and a body mass index of 31. We consider potential risk factors for a femoral stem fracture, such as patient-related factors, suboptimal implant positioning, surgical technique and implant characteristics. ER -