title: Is chronic post-herniorrhaphy pain always chronic? A literature review.
abstract: BACKGROUND
  Chronic post-surgery pain (CPSP) has gained increased recognition as a major factor influencing health-related quality-of-life following most surgical procedures, in particular following surgery for benign conditions. The natural course of CPSP, however, is not well-known.
  
  
  METHODS
  A literature review was undertaken, searching for studies with repeated estimates of post-herniorrhaphy pain. The hypothetical halvation time was calculated from the repeat estimates.
  
  
  RESULTS
  Eight studies fulfilling the criteria were identified. With one exception, the extrapolated halvation times ranged from 1.3 to 9.2 years.
  
  
  CONCLUSIONS
  Even if CPSP is generally very treatment-resistant, in many cases it eventually dissipates with time. Further studies are required to evaluate the prevalence of pain beyond the first decade.
authors.affiliation: Department of Clinical Science, Intervention and Technology, Karolinska Institute, Huddinge, Sweden.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Sandblom
keywords: chronic post-surgery pain; halvation time; hernia; neuropathic pain; pain