A retrospective analysis of high risk factors for nonunion of femoral neck fractures / 中华创伤杂志

ABSTRACT

Objective To retrospectively study postoperative nonunion of femoral neck fractures so as to identify high risk factors for their nonunion.Methods A total of 965 patients with complete clinical data out of the 1 323 patients with femoral neck fractures treated by internal fixation with cannulated compression screws from January 2003 to January 2011 were included in the study.Logistic muhiple regression method was used to analyze five factors including patients' age,gender,injury mechanism (whether high energy injury or not),fracture type (with or without displacement) and medical comorbidities [American Society of Anesthesiologists Physical Score (ASAS) grade] and their correlation with fracture healing to investigate the high risk factors for the nonunion of femoral neck fractures.Results Quantitative assay of the factors affecting healing of femoral neck fractures was ranged as followsmedical comorbidities (ASAS grade),injury mechanism (whether high energy injury or not),fracturc type (with or without displacement),gender and age.Conclusion Age ＞ 50 years,females,displacement fracture,high energy injury,and ASAS grade above Ⅲ are high risk factors for nonunion of femoral neck fractures.