Fig. 1.

AP radiographs of a 64 years old woman who sustained a displaced 2 part surgical neck fracture after a simple mechanical fall. A – Preoperative radiographs showing valgus displacement. Although the patient is relatively young, she had a low deltoid tuberosity index of 1.33. B – Intraoperative radiographs showing adequate reduction. Neck shaft angle on radiograph taken on post-operative day 1 was measured to be 138°. C - 5 months post-operative radiograph showing severe varus collapse of the humeral head, with a neck shaft angle of 82°.