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Pain sensory profiles from patients with moderate‐to‐severe (red) and none‐to‐mild (blue) chronic postoperative pain 6 months after total knee arthroplasty (mean and SD). The cuff algometer was used to assess cuff (a) pressure pain thresholds, (b) temporal summation of pain and (c) conditioned pain modulation. *p < 0.05. VAS, visual analogue scale.
