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Fig. 3 | Trials

Fig. 3

From: Effect of a high-dose target-controlled naloxone infusion on pain and hyperalgesia in patients following groin hernia repair: study protocol for a randomized controlled trial

Fig. 3

Examination areas. The examination areas exemplified with a subject after left-sided groin hernia repair. The shaded area, circumscribing the scar and delineated by sensory testing with a weighted-pin instrument (red crosses), represents a secondary hyperalgesia area. The maximum pain (red circle) is located above the left superficial inguinal ring. PT (blue circles), pubic tubercle; SIAS (blue circles), superior, inferior iliac spine

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