Fig. 1From: Pain levels and patient comfort after lower limb arthroplasty comparing i.v. patient-controlled analgesia, continuous peripheral nerve block and neuraxial analgesia: a retrospective cohort analysis of clinical routine dataRetrospective study design and patient flowchart. APS: acute pain service, Epi: epidural analgesia, PCA: i.v. patient-controlled analgesia, PNB: continuous peripheral nerve blockBack to article page