Odontoid screw placement for Anderson type II odontoid fractures. how do duration from injury to surgery and clinical and radiological factors influence the union rate? A multicenter retrospective study
Anderson type II odontoid fractures are severe conditions, mostly affecting elderly people (≥ 70 years old). Surgery can be performed as a primary treatment or in cases of failed conservative management. This study aimed to investigate how duration from injury to surgery, as well as clinical, radiological, and surgical risk factors, may influence the union rate after anterior odontoid screw placement for Anderson type II odontoid fractures.