Comparison of the Neer classification to the 2018 update of the Orthopedic Trauma Association/AO fracture classification for classifying proximal humerus fractures

Abstract

The 2018 OTA/AO classification is equivalent in its short-form to the Neer classification in inter-rater reliability and intra-rater consistency; and is superior in its full form for characterizing specific fracture types. The low inter-rater reliability of the full 2018 OTA/AO classification is a concern that may need to be addressed in the future.