Wang Q, et al. - Authors identified the optimal viewing angles for every proximal screw in PHILOS plate-fixed proximal humeral fractures. As per data, a 0°–10° axillary view with 30° arm abduction combined with two horizontal angles in the range of − 30° to − 10° and 10° to 35° for routine fluoroscopy during surgery was recommended. In avoiding primary screw penetration these results will be helpful. To visualize the penetration of every head screw, the range of optimal viewing angles was identified.