In the study, published on the front page of Clinical Orthopaedics and Related Research in June 2025, Mount Sinai Health System’s Michael R. Hausman, MD; Paul J. Cagle Jr., MD; and Christoph A. Schroen, a doctoral student, identify a new classification for nerve injuries. Their findings challenge the traditional understanding of peripheral nerve injuries and could help surgeons assess which patients would benefit from surgery early on.