Efficacy of the femoral neck system in femoral neck fracture treatment in adults: A systematic review and meta-analysis

Figure 2 Meta-analysis focusing on the efficacy of the femoral neck system vs cannulated compression screws for the surgical treatment of femoral neck fractures. A: Length of the recorded operation time; B: Blood loss; C: Fracture healing time; D: Harris Hip score recorded at the last follow-up; E: Femoral neck shortening; F: Failure of internal fixation; G: Delayed union or nonunion; H: Avascular necrosis of the femoral head.