A: The level of IL-β was increased significantly at 1 and 4wk postoperatively, but returned to the normal level at 12wk postoperation; B: The level of IL-6 was increased significantly at 1, 4, and 12wk postoperatively, but returned to the normal level at 24wk postoperation; C: The level of IL-8 was increased significantly at 1, 4, and 12wk postoperatively, but returned to the normal level at 24wk postoperation; D: The level of TNF-α was increased significantly at 1, 4 and 12wk postoperatively, but returned to the normal level at 24wk postoperation; E: The level of IL-17A was increased significantly at 1 and 4wk postoperatively, but returned to the normal level at 12wk postoperation. aP<0.05, bP<0.01, cP<0.001.