Mechlenburg, I.; Rasmussen, S.; Unbehaun, D.; Amundsen, A.; Rasmussen, J. V. Patients Undergoing Shoulder Arthroplasty for Failed Nonoperative Treatment of Proximal Humerus Fracture Have Low Implant Survival and Low Patient-Reported Outcomes: 837 Cases from the Danish Shoulder Arthroplasty Registry. ActaO 2020, 91, 319–325.