Fig. 2From: Is changing the postoperative pain management in total knee arthroplasty from femoral nerve block to local infiltration analgesia successful? Retrospective trial with the first and last 100 patientsThe pain scores at rest (mean and standard deviation) after total knee arthroplasty, as rated on 10 numeric pain rating scale (NRS) measured in the evening. No significant differences over the stay in hospital between both groups (Mann-Whitney U test)Back to article page