Fig. 1

A 74-year-old female patient, left shoulder. a Minimally displaced 3-part proximal humeral fracture. b Day 5 of non-operative treatment with slight varus displacement. c Painful varus displacement with fracture non-union 7 weeks post traumatic. d After treatment failure with conversion to secondary locked plate fixation. A 71-year-old female patient, left shoulder. e Dislocation fracture of the proximal humerus with head-split fracture of the humeral head. f 8 days after implantation of an anatomic fracture hemi-prosthesis with adequate fixation of the tuberosities. g Decompensation of the prosthesis with superior translation of the prosthesis 8 months postoperative. h Treatment failure with conversion to a reverse prosthesis 14 months after the initial treatment