Mechanical hyperalgesia and/or tactile allodynia are observed when applying force directly onto the surgical wounds after, for example, inguinal herniorrhaphy, open cholecystectomy, and abdominal hysterectomy. Several models of postoperative pain have been proposed to mimic surgical wounds.

The incisional pain model enables assessment of the increased mechanical sensitivity that follows a surgical incision and is widely used for revealing the efficacy of new analgesics.

  • Incisional pain (Brennan model) 

Tactile allodynia (electronic Von Frey test)