Research Article

Positive Preemptive Analgesia Effectiveness of Pregabalin Combined with Celecoxib in Total Knee Arthroplasty: A Prospective Controlled Randomized Study

Figure 2

(a) Pain score at rest. (b) Pain score upon movement. (c) Pain score upon movement in the combination group. (d) Cumulative dose of sufentanil. (e) High-sensitivity C-reactive protein (hs-CRP). (f) Knee range of motion (ROM). ▲ indicates a significant difference compared with a previous time point in the combination group, which suggests that the pain scores upon movement in the combined group significantly decreased continuously over time. a indicates a significant difference compared with the placebo group (); b indicates a significant difference compared with the celecoxib group (); c indicates a significant difference compared with the pregabalin group (). The difference was significant at the () level.
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