TY - JOUR AU - Frank, Florian A. AU - Niehaus, Richard AU - Borbas, Paul AU - Eid, Karim DO - doi:10.1302/0301-620X.102B7.BJJ-2020-0045.R1 UR - https://doi.org/10.1302/0301-620X.102B7.BJJ-2020-0045.R1 TI - Risk factors for secondary displacement in conservatively treated proximal humeral fractures T2 - The Bone & Joint Journal VL - 102-B IS - 7 PY - 2020 SP - 881 EP - 889 ER -