Sliding hip screws versus cancellous screws for femoral neck fractures: a systematic review and meta-analysis

10 studies (1934 patients) were included in this meta-analysis comparing sliding hip screws and cancellous screws for the surgical treatment of femoral neck fractures. Outcomes of interest included operative duration, intra-operative blood loss, nonunion, avascular necrosis, re-operation, infection, fracture healing, hip function scores, medical complications, hip pain and mortality rate. Results revealed significantly higher pooled intra-operative blood loss in the sliding hip screw group compared to the cancellous screw group. Otherwise, all outcomes were not significantly different between the two screw types.