Figure 2From: Translation between the Neer- and the AO/OTA-classification for proximal humeral fractures: do we need to be bilingual to interpret the scientific literature?The 3 types, 9 groups, and 27 subgroups of the AO/OTA classification. Reprinted from. Marsh 2007 [14] with permission from JOT, Copyright Clearance Center.Back to article page