CRP and infection: Reoperation is also associated with the increased risk of surrounding tissue necrosis, incision infection etc.10 However, due to the long-term stress, if left unremoved, internal fixation device may cause tissue hyperplasia and callus, and affect the original deformation ratio, which may cause bone atrophy and partial bone nonunion.11 Tumor necrosis factor-α (TNF-α) and C-reactive protein (CRP) are typical inflammatory indexes.