Fig. 2From: Evaluation of a multimodal pain therapy concept for chronic pain after total knee arthroplasty: a pilot study in 21 patientsPain development at the times of examination (hospitalization, hospital discharge, 1. follow-up, 2. follow-up). Green: Knee Society Score of Insall et al. for pain (0–50); Red: Numerical Analog Scale for pain (0–10)Back to article page