CRP and rheumatoid arthritis: MTX usage and biologic usage were not different between RA patients with and without steroid (MTX: 50% vs. 50%, p > 0.99, biologics: 28% vs. 14%, p = 0.43), but preoperative serum CRP were significantly higher in RA patients on steroid (mean 0.80 vs. 0.51 mg/dL, p = 0.03).