Brorson S, et al. - Researchers examined the data to estimate the value of terms and definitions of complexities after nonsurgical management of proximal humeral fractures. They did not find additional definitions or terms when they terminated after retrieval of 91 articles. Additionally, they reviewed 12 book chapters from an initial list of 100. They did not observe any general definition of a complication. They recorded some frequent event terms like osteonecrosis, malunion, secondary displacement, and rotator cuff problems.