I. Mechlenburg, S. Rasmussen, D. Unbehaun, A. Amundsen, and J. V. Rasmussen, “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, vol. 91, no. 3, pp. 319–325, Feb. 2020.