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PUBLICATIONS FROM THE DANISH HERNIA DATABASE (updated april 2026)

​The list of publications can be downloaded as a word-document here.

  1. Sørensen CB, Rosenberg J, Baker JJ. The optimal mesh weight in onlay repair depends on ventral hernia type: a nationwide register-based cohort study. Hernia 2026; 30: 38. https://doi.org/10.1007/s10029-025-03549-8

  2. Ahmed U, Baker JJ, Rosenberg J. Trends in mesh placement in elective ventral hernia repair: an 18-year nationwide registry-based study. Hernia 2026; 30: 39. https://doi.org/10.1007/s10029-025-03512-7

  3. Gram-Hanssen A, Baker JJ, Reistrup H, Rosenberg J. Patients' motivation for undergoing elective repair of a primary ventral hernia: a Danish nationwide cohort study. Hernia 2026; 30: 110. https://doi.org//10.1007/s10029-026-03627-5.

  4. Gram-Hanssen A, Baker JJ, Reistrup H, Andersen KK, Rosenberg J. Protocol for the AFTERHERNIA Project: patient-reported outcomes of groin and ventral hernia repair. Hernia 2025; 29: 79. https://doi.org/10.1007/s10029-025-03259-1

  5. Marckmann M, Henriksen NA, Christoffersen MW, Kiim KS. Slowly absorbable suture for fascial defect closure in open incisional hernia mesh-repair is associated with decreased long-term recurrence: a nationwide cohort study. Hernia. 2026 Feb 26;30(1):103. doi: 10.1007/s10029-026-03585-y.

  6. Marckmann M, Henriksen NA, Kiim KS. Abandoning mesh "overlap" in favor of "width" and its importance in open retromuscular midline incisional hernia repair: a nationwide database study. Hernia. 2025 Jul 29;29(1):237. doi: 10.1007/s10029-025-03423-7.

  7. Fredberg J, Oma E, Helgstrand F, Qvist N, Friis-Andersen H, Jørgensen LN. Emergency umbilical and epigastric hernia repair: nationwide registry-based study of long-term recurrence, mesh-related, and other complications. Surg Endosc. 2025 Jul;39(7):4253-4265. doi: 10.1007/s00464-025-11792-4

  8. Henriksen NA, Willaume Christoffersen M, Marckmann M, Jensen KK.  Procedural Costs of Robot-Assisted and Laparoscopic Ventral and Incisional Hernia Repair. A Propensity-Score Matched Nationwide Database Study. J Abdom Wall Surg. 2025 Nov 4;4:15464. doi: 10.3389/jaws.2025.15464

  9. Malaibari Z, Christoffersen MW, Krogsgaard M, Henriksen NA, Andresen K, Helgstrand F, Aldemyati R, Rosenberg J. Non-Operative Considerations in Relation to Parastomal Hernia. J Abdom Wall Surg. 2025 Oct 15;4:15473. doi: 10.3389/jaws.2025.15473.

  10. Broholm M, Gögenur I, Thygesen LC, Helgstrand F. Chronic inflammation following hernia repair and cancer risk: A nationwide study. Surg Open Sci. 2025 Jun 25;27:88-93. doi: 10.1016

  11. Rosenberg J, Christoffersen MW, Krogsgaard M, Henriksen NA, Andresen K, Christensen MK, Dorfelt A, Pejtersen L, Sommer T, Wensel N, Zinther NB, Helgstrand F. Non-operative considerations in relation to groin and ventral hernia repair: local consensus recommendations from the Danish Hernia Database. Hernia 2025; 29: 186. https://doi.org/10.1007/s10029-025-03377-w

  12. Andresen K, Kroon L, Holmberg H, Nordin P, Rosenberg J, Öberg S, de la Croix H. Risk of reoperation after TEP, TAPP, and Lichtenstein repair for primary groin hernia: a register-based cohort study across two nations. Hernia 2025; 29: 189. https://doi.org/10.1007/s10029-025-03374-z

  13. Moseholm VB, Christophersen C, Baker JJ, Rosenberg J. Surgeon experience increases nerve identification during Lichtenstein hernia repair: a nationwide register-based study. Am J Surg 2025; 247: 116468. https://doi.org/10.1016/j.amjsurg.2025.116468

  14. Andresen K, Christoffersen MW, Rosenberg J, Henriksen N. Similar recurrence rates among the 10 most used meshes for laparoscopic groin hernia repair: a nationwide register-based cohort study. Hernia 2025; 29: 215. https://doi.org/10.1007/s10029-025-03397-6

  15. Helgstrand F, Henriksen N, Andresen K, Dorfelt A, Christensen MK, Krogsgaard M, Peitersen L, Puggaard CG, Rosenberg J, Rühmann B, Sant AKD, Sommer T, Wensel N, Willaume M, Zinther NB. Dansk Herniedatabase: Laparoskopi og et stigende antal operationer. Ugeskr Læger 2025; 187: 1499.

  16. Kirk M, Henriksen NA, Christoffersen MW, Andresen K, Dorfelt A, Krogsgaard M, Pejtersen L, Sommer T, Wensel N, Zinther NB, Helgstrand F, Rosenberg J. Management of adult groin hernia in Denmark: a national updated consensus. JAWS 2025; 4: 14904. https://doi.org/10.3389/jaws.2025.14904

  17. Henriksen NA, Christoffersen MW, Andresen K, Christensen MK, Dorfelt A, Krogsgaard M, Rosenberg J, Sommer T, Wenzel N, Zinther NB, Helgstrand F. Rectusdiastase hos mænd. Ugeskr Læger 2025; 187: V04250320. https://doi.org/10.61409/V04250320

  18. Ahmed U, Rosenberg J, Baker JJ. Trends in mesh materials for ventral hernia repair: a 17-year nationwide registry-based study. Surg Innov 2025; 32: 417-427. https://doi.org/10.1177/15533506251345275

  19. Malaibari Z, Christoffersen MW, Krogsgaard M, Henriksen NA, Andresen K, Helgstrand F, Aldemyati R, Rosenberg J. Non-operative considerations in relation to parastomal hernia. J Abd Wall Surg 2025; 4: 15473. https://doi.org/10.3389/jaws.2025.15473

  20. Ahmed U, Rosenberg J, Baker JJ. Slowly absorbable sutures do not increase the risk of reoperation for recurrence compared with non-absorbable sutures in primary ventral hernia repair: a nationwide register-based cohort study. Surgery 2025; 188: 109778. https://doi.org/10.1016/j.surg.2025.109778

  21. Deveci CD, Baker JJ, Rosenberg J. Mesh weight in reoperation for recurrence after laparoscopic inguinal hernia repair. JAMA Surg 2025; 160: 1334-1339. https://doi.org/10.1001/jamasurg.2025.4328

  22. Henriksen NA, Marckmann M, Christoffersen MW, Jensen KK. Cost analysis of open versus robot-assisted ventral hernia repair - a retrospective cohort study. Hernia. 2024 Oct;28(5):1823-1829. doi: 10.1007/s10029-024-03089-7

  23. Henriksen NA, Helgstrand F. Prospective nationwide analysis of long-term recurrence rates after elective ventral, incisional and parastomal hernia repairs. BJS Open. 2024 Jul 2;8(4):zrae070. doi: 10.1093/bjsopen/zrae070.

  24. Reistrup H, Andresen K, Öberg S, Rosenberg J. Higher rate of chronic pain in young men after open mesh vs non-mesh repair of elective primary unilateral indirect inguinal hernia: a nationwide questionnaire study. Curr Probl Surg 2024; 61: 101459. https://doi.org/10.1016/j.cpsurg.2024.101459

  25. Moseholm VB, Baker JJ, Rosenberg J. Identification of the ilioinguinal and iliohypogastric nerves during open inguinal hernia repair: a nationwide register‑based study. Hernia 2024; 28: 1181–1186. https://doi.org/10.1007/s10029-024-03002-2

  26. Rosenberg J. Common techniques in elective groin hernia repair: a guide for the trainee. ARC J Surg 2024; 10: 23-31. https://doi.org/10.20431/2455-572X.1001003

  27. Helgstrand F, Henriksen N, Sommer T, Dorfelt A, Andresen K, Peitersen L, Krogsgaard M, Christensen MK, Willaume M, Rosenberg J, Zinther NB, Wensel N, Puggaard CG, Rühmann B, Sant AKD. Dansk Herniedatabase: Sikre superviserede operationer på offentlige sygehuse. Ugeskr Læger 2024; 186: 1774.

  28. Baker JJ, Rosenberg J. Primary and incisional hernias should be considered separately in clinical decisions and research: a nationwide register-based cohort study. Surgery 2024; 176: 1676-1682. https://doi.org/10.1016/j.surg.2024.09.003

  29. Hegstad B, Jensen TK, Helgstrand F, Henriksen NA. Repair of umbilical hernias concomitant to other procedures is safe: a propensity score-matched database study. Hernia. 2024 Aug;28(4):1093-1101. doi:10.1007/s10029-024-02977-2

  30. Jensen KK, Helgstrand F, Henriksen NA. Short-term outcomes after laparoscopic IPOM versus robot-assisted retromuscular repair of small to medium ventral hernias: a nationwide database study. Ann Surg. 2024 Jan 1;279(1):154-159. doi: 10.1097/SLA.0000000000005915

  31. Henriksen NA, Helgstrand F, Jensen KK. Short-term outcomes after open versus robot-assisted repair of ventral hernias: a nationwide database study. Hernia. 2024 Feb;28(1):233-240. doi: 10.1007/s10029-023-02923-8

  32. Henriksen NA, Helgstrand F. Prospective nationwide analysis of long-term recurrence rates after elective ventral, incisional and parastomal hernia repairs. BJS Open. 2024 Jul 2;8(4):zrae070. doi: 10.1093/bjsopen/zrae070

  33.  Henriksen NA, Jensen KK. Trends in use of laparoscopic intraperitoneal onlay mesh for ventral hernia repair. JAMA Surg. 2024 Jan 1;159(1):109-111. doi: 10.1001/jamasurg.2023.5623

  34. Baker JJ, Öberg S, Rosenberg J. Reoperation for recurrence is affected by type of mesh in laparoscopic ventral hernia repair: a nationwide cohort study. Ann Surg 2023; 277: 335-342. https://10.1097/SLA.0000000000005206

  35. Christophersen C, Fonnes S, Andresen K, Rosenberg J. Risk of reoperation for recurrence after elective primary groin and ventral hernia repair by supervised residents. JAMA Surg 2023; 158: 359-367. https://10.1001/jamasurg.2022.7502

  36. Andresen K, Rosenberg J, Jørgensen LN, Kehlet H. Lyskebrokoperation i lokalbedøvelse – en glemt teknik? Ugeskr Læger 2023; 185: V205147.

  37. Harmankaya S, Öberg S, Rosenberg J. Varying convalescence recommendations for sport and heavy lifting after groin hernia repair: a nationwide survey among leading hernia surgeons. Surg Endosc 2023; 37: 4443-4448. https://10.1007/s00464-023-09913-y

  38. Henriksen N, Andresen K, Thielsen M, Rosenberg J. Udredning og behandling af hernier i lyske og navle. Månedsskrift for Almen Praksis 2023; Oktober: 636-643.

  39. Holm MA, Baker JJ, Andresen K, Fonnes S, Rosenberg J. Epidemiology and surgical management of 184 obturator hernias: a nationwide registry-based cohort study. Hernia 2023; 27: 1451-1459. https://doi.org/10.1007/s10029-023-02891-z

  40. Andresen K, Rosenberg J, Jørgensen LN, Kehlet H. Lyskebrokoperation i lokalbedøvelse – en glemt teknik? Ugeskr Læger 2023; 185: V205147.

  41. Harmankaya S, Öberg S, Rosenberg J. Varying convalescence recommendations for sport and heavy lifting after groin hernia repair: a nationwide survey among leading hernia surgeons. Surg Endosc 2023; 37: 4443-4448. https://10.1007/s00464-023-09913-y

  42. Henriksen N, Andresen K, Thielsen M, Rosenberg J. Udredning og behandling af hernier i lyske og navle. Månedsskrift for Almen Praksis 2023; Oktober: 636-643.

  43. Holm MA, Baker JJ, Andresen K, Fonnes S, Rosenberg J. Epidemiology and surgical management of 184 obturator hernias: a nationwide registry-based cohort study. Hernia 2023; 27: 1451-1459. https://doi.org/10.1007/s10029-023-02891-z

  44. Henriksen NA, Andresen K, Wensel N, Sommer T, Bisgaard T, Thielsen M, Christoffer MW, Jensen KK, Dorfelt A, Friis-Andersen H, Krogsgaard M, Helgstrand F, Rosenberg J. Navlebrok og lyskebrok. Månedsskrift for Almen Praksis

  45. Reistrup H, Andresen K, Öberg S, Rosenberg J. Higher rate of chronic pain in young men after open mesh vs nonmesh repair of elective primary unilateral indirect inguinal hernia: A nationwide questionnaire study. Curr Probl Surg. 2024;61:101459. https://doi.org/10.1016/j.cpsurg.2024.101459​

  46. Christophersen C, Fonnes S, Andresen K, Rosenberg J. Risk of reoperation for recurrence after elective primary groin and ventral hernia repair by supervised residents. JAMA Surg 2023; 158:359-367. https://doi.org/10.1001/jamasurg.2022.7502

  47. Sæter AH, Fonnes S, Rosenberg J, Andresen K. Organisation of emergency groin hernia surgery across Denmark. Dan Med J 2022; 69(10): A02220125.

  48. Hansen DL, Christophersen C, Fonnes S, Rosenberg J. Implementation of robot-assisted groin hernia repair diminishes the prospects of young surgeons’ training: a nationwide register-based cohort study. Hernia 2022; 26: 1653-1658. https://10.1007/s10029-022-02691-x

  49. Andresen K, Kroon L, Holmberg H, Öberg S, Rosenberg J, Nordin P, de la Croix H. Collaboration between the Danish and Swedish hernia registers - a study protocol. Dan Med J 2022; 69: A06220408.

  50. Christoffersen MW, Jensen KK, Krogsgaard M, Dorfelt A, Friis-Andersen H, Sommer T, Wensel N, Henriksen NA, Andresen K, Bisgaard T, Rosenberg J, Helgstrand F. Behandling af incisional- og parastomalhernier – anbefalinger fra Dansk Herniedatabase. Ugeskr Læger 2022; 184: V10220593.

  51. Christophersen C, Fonnes S, Baker JJ, Andresen K, Rosenberg J. Celestial risk factors in groin hernia repair and random statistical association: a nationwide register-based study. N Z Med J 2022; 136: 24-36. https://10.26635/6965.5711

  52. Christophersen C, Fonnes S, Baker JJ, Andresen K, Rosenberg J. Celestial risk factors in groin hernia repair and random statistical association: a nationwide register-based study. N Z Med J 2022; 136: 24-36, PMID: 36726318

  53. Baker JJ, Öberg S, Rosenberg J. Reoperation for recurrence is affected by type of mesh in laparoscopic ventral hernia repair: a nationwide cohort study. Ann Surg 2023; 277:335-342  https://doi.org/10.1097/sla.0000000000005206

  54. Petersen M, Friis-Andersen H, Zinther N. Does closure of the direct hernia defekt in laparoscopic inguinal herniotomy reduce the risk of recurrence and seroma formation? a systematic review and meta-analysis. Hernia 2023 Apr; 27 (2):259-264 http://doi:10.1007/s10029-022-02724-5. Epub 2022 Dec 10.PMID:36495351 Review.

  55. Bodilsen A, Brandsborg S, Friis-Andersen H. Hernia. 2022 Aug; 26(4): 1047-1052.  https://doi.org/10.1007/s10029-022-02633-7   Epub 2022 Jun 3.PMID:35657488

  56. Christoffersen MW, Jensen KK, Krogsgaard M, Dorfelt A, Friis-Andersen H, Sommer T, Wensel N, Henriksen NA, Andresen K, Bisgaard T, Rosenberg J, Helgstrand F. Behandling af incisional- og parastomalhernier- anbefalinger fra Dansk Herniedatabase. Ugeskr Læger 2022; 184: V10220593

  57. Andresen K, Kroon L, Holmberg H, Öberg S, Rosenberg J, Nordin P, de la Croix H. Collaboration between the Danish and Swedish hernia registers- a study protocol. Dan Med J 2022; 69 (12): A06220408.

  58. Hansen DL, Christophersen C, Fonnes S, Rosenberg J. Implementation of robot-assisted groin hernia repair diminished the prospects of young surgeons' training: a nationwide register-based cohort study. Hernia 2022; 26: 1653-1658. https://doi.org/10.1007/s10029-022-02691-x

  59. Gamborg S, Öberg S, Rosenberg J. Long-term pain relief after groin hernia for sports groin: A nationwide cohort study. Scand J Surg 2022; 111 (1): 14574969211044030. https://doi.org/10.1177/14574969211044030

  60. Sæter AH, Fonnes S, Rosenberg J, Andresen K. High complication and mortality rates after emergency groin hernia repair: a nationwide register-based cohort study. Hernia 2022; 26: 1131-1141. https://doi.org/10.1007/s10029-022-02597-8

  61. Gamborg S, Marcussen ML, Öberg S, Rosenberg J. Inguinal repair but no hernia present: a nationwide cohort study. Surg Technol Int 2022; 40: 171-174. https://doi.org/10.52198/22.sti.40.hr1585

  62. Vad MV, Svendsen SW, Frost P, Nattino G, Rosenberg J, Lemeshow S. Inguinal hernia repair among men: development and validation of a preoperative risk score for persistent postoperative pain. Hernia 2022; 26: 177-187. https://doi.org/10.1007/s10029-021-02376-x

  63. Bisgaard T, Helgstrand F, Andersen HF, Rosenberg J, Jørgensen LN, Pedersen KF, Henriksen NA. Optimizing outcomes after hernia repair: highlights for the Danish Hernia Database 2010-2020. Laparosc Surg 2022; 6: 5. https://doi.org/10.21037/ls-20-130

  64. Henriksen NA, Jørgensen LN, Friis-Andersen H, Hlgstrand F; Danish Hernia Database,Surg Endosc.2022 Jan; 36 (1): 526-532  https://doi:10.1007/s00464-021-08312-5. Epub 2021 Feb 2 PMID;33528663

  65. Öberg S, Jessen ML, Andresen K, Rosenberg J. Technical details and findings during a second Lichtenstein repair or a second laparoscopic repair in the same groin: a study based on medical records. Hernia 2021; 25: 149-157. https://10.1007/s10029-019-02090-9

  66. Olsen JHH, Andresen K, Öberg S, Mortensen LQ, Rosenberg J. Mortality and urological complications after open groin hernia repair in local, general, and regional anesthesia: a nationwide linked register study. Scand J Surg 2021; 110: 22-28. https://10.1177/1457496919877580

  67. Andresen K, Rosenberg J. Decreasing use of open procedures in elective inguinal hernia surgery. Laparosc Surg 2021; 5: 17. https://10.21037/ls-20-126

  68. Rosenberg J, Friis-Andersen H, Jørgensen LN, Andresen K. Variables in the Danish Hernia Databases: inguinal and ventral. Laparosc Surg 2021; 5: 30. https://10.21037/ls-20-125

  69. Christophersen C, Fonnes S, Baker JJ, Andresen K, Rosenberg J. Surgeon volume and risk of reoperation after laparoscopic primary ventral hernia repair: a nationwide register-based study. J Am Coll Surg 2021; 233: 346-356. https://10.1016/j.jamcollsurg.2021.05.023

  70. Christophersen C, Baker JJ, Fonnes S, Andresen K, Rosenberg J. Lower reoperation rates after open and laparoscopic groin hernia repair when performed by high-volume surgeons: a nationwide register-based study. Hernia 2021; 25: 1189-1197. https://10.1007/s10029-021-02400-0

  71. Christophersen C, Baker JJ, Fonnes S, Andresen K, Rosenberg J. Lower reoperation rate after open and laparoscopic groin hernia repair when performeret by high-volume surgeons: a nationswide register study. Hernia 2021; 25: 1189-1197. https://doi.org/10.1007/s10029-021-02400-0

  72. Christophersen C, Fonnes S, Baker JJ, Andresen K, Rosenberg J.Surgeons volume and risk of reoperation after laparoscopic primary ventral hernia repair: a nationwide register-based study. J AM Coll Surg 2021; 233: 346-356. https://doi.org/10.1016/j.jamcollsurg.2021.05.023

  73. Rosenberg J, Friis-Andersen H, Jørgensen LN, Andresen K. Variables in the Danish Hernia Database: inguinal and ventral. Laparosc Surg 2021; 5: 30 http://dx.doi.org/10.21037/ls-20-125

  74. Andresen K, Rosenberg J. Decreasing use of open procedures in elective inguinal hernia surgery. Laparosc Surg 2021; 5: 17. https://doi.org/10.21037/ls-20-126

  75. Olsen JHH, Andresen K, Öberg S, Mortensen LQ, Rosenberg J. Mortality and urological complications after open groin hernia repair in local, general and regional anæsthesia: a nationwide linked register study. Scand J Surg 2021; 110:22-28. https://doi.org/10.1177/1457496919877580

  76. Oma E, Baastrup NN, Jensen KK. Should simultaneous stoma closure and incisional hernia repair be avoided? Hernia, 2021 https://doi.org/10.1007/s10029-020-02312-5

  77. Öberg S, Jessen ML, Andresen K, Rosenberg J. Technical details and findings during a second Lichtenstein repair or a second laparoscopic repair in the same groin: a study based on medical records. Hernia 2021; 25: 149-157 https://doi.org/10.1007/s10029-019-02090-9

  78. Henriksen NA, Friis-Andersen H, Jørgensen LN, Helgstrand F. Open versus laparoscopic incisional hernia repair: nationwide database study. BJS Open 2021;5:zraa010 https://doi.org/10.1093/bjsopen/zraa010

  79. Gamborg S, Öberg S, Rosenberg J. Characteristics of groin hernia repair in patients without a groin hernia: a nationwide cohort study. Hernia 2020; 24: 115-120. https://10.1007/s10029-019-01967-z

  80. Schmidt L, Andresen K, Rosenberg J. No difference in genitourinary complications after laparoscopic vs. open groin hernia repair in women: a nationwide linked register-based cohort study. Surg Endosc 2020; 34: 1978–1984. https://10.1007/s00464-019-06973-x

  81. Öberg S, Andresen K, Baker JJ, Angenete E, Rosenberg J. Chronic pain after reoperation of an inguinal hernia with Lichtenstein or laparoscopic repair following a primary Lichtenstein repair: a nationwide questionnaire study. Am J Surg 2020; 219: 701-706. https://10.1016/j.amjsurg.2019.04.015

  82. Öberg S, Jessen ML, Andresen K, Rothman JV, Rosenberg J. High complication rates during and after repeated Lichtenstein or laparoscopic inguinal hernia repairs in the same groin: a cohort study based on medical records. Hernia 2020; 24: 801-810. https://10.1007/s10029-019-02083-8

  83.  

  84. Lydeking L, Johansen N, Oehlenschläger J, Bay-Nielsen M, Bisgaard T. Re-recurrence and pain 12 years after laparoscopic transabdominal preperitoneal (TAPP) or Lichtenstein's repair for a recurrent inguinal hernia: a multi-centre single-blinded randomised clinical trial. Hernia 2020;24:787-92. https://doi.org/10.1007/s10029-020-02139-0

  85. Helgstrand F, Thygesen LC, Bisgaard T, Jørgensen LN, Friis-Andersen H. Differential recurrence after laparoscopic incisional hernia repair: importance of a nationwide registry-based mesh surveillance. Br J Surg 202;107:1130-6. https://doi.org/10.1002/bjs.11562

  86. Oma E, Jensen KK, Bisgaard T, Jørgensen LN. Association of primary ventral hernia and pregnancy. Ann Surg 2020;272:170-6. https://doi.org/10.1097/sla.0000000000003170

  87. Oma E, Jensen KK, Jørgensen LN, Bisgaard T. Incisional hernia repair in women of childbearing age: A nationwide propensity-score matched study. Scand J Surg 2020;109:295-300. https://doi.org/10.1177/1457496919874482

  88. Henriksen NA, Bisgaard T, Helgstrand F; Danish Hernia Database. Smoking and obesity are associated with increased readmission after elective repair of small primary ventral hernias: a nationwide database study. Surgery 2020;168:527-31. https://doi.org/10.1016/j.surg.2020.04.012

  89. Jensen KK, Nordholm-Carstensen A, Krarup PM, Jørgensen LN. Incidence of incisional hernia repair after laparoscopic compared to open resection of colonic cancer: a nationwide analysis of 17,717 patients. World J Surg 2020;44:1627-36. https://doi.org/10.1007/s00268-020-05375-8

  90. Öberg S, Jessen ML, Andresen K, Rothman JV, Rosenberg J. High complication rates during and after repeated Lichtenstein or laparoscopic inguinal hernia repairs in the same groin: a cohort study based on medical records. Hernia 2020;24:801-10. https://doi.org/10.1007/s10029-019-02083-8

  91. Schmidt L, Andresen K, Rosenberg J. No difference in genitourinary complications after laparoscopic vs. open groin hernia repair in women: a nationwide linked register-based cohort study. Surg Endosc 2020;34:1978–84. https://doi.org/10.1007/s00464-019-06973-x

  92. Öberg S, Andresen K, Nilsson H, Angenete E, Rosenberg J. Chronic pain after two laparoendoscopic inguinal hernia repairs compared with laparoendoscopic repair followed by the Lichtenstein repair: an international questionnaire study. Surg Endosc 2020;34:946-53. https://doi.org/10.1007/s00464-019-06853-4

  93. Öberg S, Andresen K, Baker JJ, Angenete E, Rosenberg J. Chronic pain after reoperation of an inguinal hernia with Lichtenstein or laparoscopic repair following a primary Lichtenstein repair: A nationwide questionnaire study. Am J Surg 2020;219:701-6. https://doi.org/10.1016/j.amjsurg.2019.04.015

  94. Gamborg S, Öberg S, Rosenberg J. Characteristics of groin hernia repair in patients without a groin hernia: a nationwide cohort study. Hernia 2020;24:115-20. https://doi.org/10.1007/s10029-019-01967-z

  95. Olsen JHH, Andresen K, Öberg S, Mortensen LQ, Rosenberg J. Mortality and urological complications after open groin hernia repair in local, general, and regional anesthesia: a nationwide linked register study. Scand J Surg 2019;2:1457496919877580.[JR1]  

  96. Vad MV, Frost P, Rosenberg J, Svendsen SW. Persistent postoperative pain after inguinal hernia repair in relation to occupational lifting and standing/walking: a 6-month follow-up study. Occup Environ Med. 2019;76:712-7. https://doi.org/10.1136/oemed-2019-105919

  97. Schmidt L, Andresen K, Öberg S, Rosenberg J. Surgical techniques and convalescence recommendations vary greatly in laparoscopic groin hernia repair: a nationwide survey among experienced hernia surgeons. Surg Endosc. 2019;33:2235-41. https://doi.org/10.1007/s00464-018-6510-8

  98. Oma E, Bisgaard T, Jørgensen LN, Jensen KK. Nationwide propensity-score matched study of mesh versus suture repair of primary ventral hernias in women with a subsequent pregnancy. World J Surg 2019;43:1497-1504. https://doi.org/10.1007/s00268-019-04940-0

  99. Schmidt L, Öberg S, Andresen K, Rosenberg J. Laparoscopic repair is superior to open techniques when treating primary groin hernias in women: a nationwide register-based cohort study. Surg Endosc 2019;33:71-8. https://doi.org/10.1007/s00464-018-6270-5

  100. Kohl AP, Andresen K, Rosenberg J. Male fertility after inguinal hernia mesh repair: a national register study. Ann Surg 2018;268:374-8. https://doi.org/10.1097/sla.0000000000002423

  101. Öberg S, Andresen K, Rosenberg J. Decreasing prevalence of chronic pain after  laparoscopic groin hernia repair: a nationwide cross-sectional questionnaire study. Surg Today 2018;48:796-803.  https://doi.org/10.1007/s00595-018-1664-5

  102. Baker JJ, Öberg S, Andresen K, Rosenberg J. Decreased re-operation rate for recurrence after defect closure in laparoscopic ventral hernia repair with a permanent tack fixated mesh: a nationwide cohort study. Hernia 2018;22:577-84. https://doi.org/10.1007/s10029-018-1776-2

  103. Baker JJ, Öberg S, Andresen K, Helgstrand F, Rosenberg J. Adding sutures to tack fixation of mesh does not lower the re-operation rate after laparoscopic ventral hernia repair: a nationwide cohort study. Langenbecks Arch Surg 2018;403:521-7. https://doi.org/10.1007/s00423-018-1681-2

  104. Andersen P, Erichsen R, Frøslev T, Madsen MR, Laurberg S, Iversen LH. Open versus laparoscopic rectal cancer resection and risk of subsequent incisional hernia repair and paracolostomy hernia repair: a nationwide population-based cohort study. Surg Endosc 2018;32:134-44. https://doi.org/10.1007/s10029-017-1724-6

  105. Kyle-Leinhase I, Köckerling F, Jørgensen LN, Montgomery A, Gillion JF, Rodriguez JAP, Hope W, Muysoms F. Comparison of hernia registries: the CORE project. Hernia 2018;22:561-75. https://doi.org/10.1007/s10029-017-1724-6

  106. Henriksen NA, Bisgaard T, Andersen HF, Jørgensen LN, Helgstrand F. Kirurgisk behandlingsalgoritme for ventralhernier. Ugeskr Læger 2018;180:V02180096. 

  107. Andersen P, Erichsen R, Frøslev T, Madsen MR, Laurberg S, Iversen LH. Open versus laparoscopic rectal cancer resection and risk of subsequent incisional hernia repair and paracolostomy hernia repair: a nationwide population-based cohort study. Surg Endosc 2018;32:134-44. https://doi.org/10.1007/s00464-017-5648-0

  108. Vad MV, Frost P, Rosenberg J, Andersen JH, Svendsen SW. Inguinal hernia repair among men in relation to occupational mechanical exposures and lifestyle factors: a longitudinal study. Occup Environ Med 2017;74:769-75. https://doi.org/10.1007/s00464-017-5454-8

  109. Andresen K, Fenger AQ, Burcharth J, Pommergaard HC, Rosenberg J. Mesh fixation methods and chronic pain after transabdominal preperitoneal (TAPP) inguinal hernia surgery: a comparison between fibrin sealant and tacks. Surg Endosc 2017;31:4077-84. https://doi.org/10.1007/s00464-017-5454-8

  110. Haastrup E, Andresen K, Rosenberg J. Low reoperation rates in young males after sutured repair of indirect inguinal hernia: Arguments for a tailored approach. Am J Surg 2017;214:844-8. https://doi.org/10.1016/j.amjsurg.2017.02.015

  111. Oma E, Jensen KK, Jørgensen LN. Increased risk of ventral hernia recurrence after pregnancy: A nationwide register-based study. Am J Surg 2017;214:474-8. https://doi.org/10.1016/j.amjsurg.2017.03.044

  112. Oma E, Jørgensen LN, Meisner S, Henriksen NA. Colonic diverticulosis is associated with abdominal wall hernia. Hernia 2017;21:525-9. https://doi.org/10.1007/s10029-017-1598-7

  113. Bisgaard T, Kokotovic D, Helgstrand F. Recurrence and mesh-related complications after incisional hernia repair - reply. JAMA 2017;317:537. https://doi.org/10.1001/jama.2016.20117

  114. Pommergaard HC, Burcharth J, Andresen K, Fenger AQ, Rosenberg J. No difference in sexual dysfunction after transabdominal preperitoneal (TAPP) approach for inguinal hernia with fibrin sealant or tacks for mesh fixation. Surg Endosc 2017;31:661-6. https://doi.org/10.1007/s00464-016-5017-4

  115. Nolsøe A, Andresen K, Rosenberg J. Repair of recurrent hernia is often performed at a different clinic. Hernia 2016;20:783-7. https://doi.org/10.1007/s10029-016-1539-x

  116. Öberg S, Andresen K, Rosenberg J. Surgical approach for recurrent inguinal hernias: a nationwide cohort study. Hernia 2016;20:777-82. https://doi.org/10.1007/s10029-016-1531-5

  117. Andresen K, Friis-Andersen H, Rosenberg J. Laparoscopic repair of primary inguinal hernia performed in public hospitals or low-volume centers have increased risk of reoperation for recurrence. Surg Innov 2016;23:142-7. https://doi.org/10.1177/1553350615596636

  118. Helgstrand F, Jørgensen LN. The Danish Ventral Hernia Database - a valuable tool for quality assessment and research. Clin Epidemiol 2016;25:719-23. https://doi.org/10.2147/clep.s99501

  119. Kokotovic D, Bisgaard T, Helgstrand F. Long-term recurrence and complications associated with elective incisional hernia repair. JAMA 2016;316:1575-82. https://doi.org/10.1001/jama.2016.15217

  120. Friis-Andersen H, Bisgaard T. The Danish Inguinal Hernia Database. Clin Epidemiol 2016;8:521-4. https://doi.org/10.2147/clep.s99512

  121. Henriksen NA, Mortensen JH, Lorentzen L, Ågren MS, Bay-Jensen AC, Jørgensen LN, Karsdal MA. Abdominal wall hernias - a local manifestation of systemically impaired quality of the extracellular matrix. Surgery 2016;160:220-7. https://doi.org/10.1016/j.surg.2016.02.011

  122. Oma E, Jensen KK, Jørgensen LN. Recurrent umbilical or epigastric hernia during and after pregnancy: A nationwide cohort study. Surgery 2016;159:1677-83. 

  123. Fenger AQ, Helvind NM, Pommergaard HC, Burcharth J, Rosenberg J. Fibrin sealant for mesh fixation in laparoscopic groin hernia repair does not increase long-term recurrence. Surg Endosc 2016;30:986-92. https://doi.org/10.1007/s00464-015-4280-0

  124. Christoffersen MW, Brandt E, Oehlenschläger J, Rosenberg J, Helgstrand F, Jørgensen LN, Bardram L, Bisgaard T. No difference in incidence of port-site hernia and chronic pain after single-incision laparoscopic cholecystectomy versus conventional laparoscopic cholecystectomy: a nationwide prospective matched cohort study. Surg Endosc 2015;29:3239-45. https://doi.org/10.1007/s00464-015-4066-4

  125. Vad MV, Frost P, Svendsen SW. Occupational mechanical exposures and reoperation after first-time inguinal hernia repair: a prognosis study in a male cohort. Hernia 2015;19:893-900. https://doi.org/10.1007/s10029-014-1339-0

  126. Burcharth J, Pedersen MS, Pommergaard HC, Bisgaard T, Pedersen CB, Rosenberg J. The prevalence of umbilical and epigastric hernia repair: a nationwide epidemiologic study. Hernia 2015;19:815-9. https://doi.org/10.1007/s10029-015-1376-3

  127. Burcharth J, Andresen K, Pommergaard HC, Rosenberg J. Groin hernia subtypes are associated in patients with bilateral hernias: a 14-year nationwide epidemiologic study. Surg Endosc 2015;29:2019-26. https://doi.org/10.1007/s00464-014-3905-z

  128. Andresen K, Bisgaard T, Rosenberg J. Sliding inguinal hernia is a risk factor for recurrence. Langenbecks Arch Surg 2015;400:101-6. https://doi.org/10.1007/s00423-014-1262-y

  129. Christoffersen MW, Helgstrand F, Rosenberg J, Kehlet H, Strandfelt P, Bisgaard T. Long-term recurrence and chronic pain after repair for small umbilical or epigastric hernias: a regional cohort study. Am J Surg 2015;209:725-32. https://doi.org/10.1016/j.amjsurg.2014.05.021

  130. Christoffersen MW, Brandt E, Helgstrand F, Westen M, Rosenberg J, Kehlet H, Strandfelt P, Bisgaard T. Recurrence rate after absorbable tack fixation of mesh in laparoscopic incisional hernia repair. Br J Surg 2015;102:541-7. https://doi.org/10.1002/bjs.9750

  131. Andresen K, Bisgaard T, Kehlet H, Wara P, Rosenberg J. Reoperation rates for laparoscopic vs open repair of femoral hernias in Denmark: A nationwide analysis. JAMA Surg 2014;149:853-7. https://doi.org/10.1001/jamasurg.2014.177

  132. Burcharth J, Andresen K, Pommergaard HC, Bisgaard T, Rosenberg J. Direct inguinal hernias and anterior surgical approach are major risk factors for female inguinal hernia recurrence. Langenbecks Arch Surg 2014;399:71-6. https://doi.org/10.1007/s00423-013-1124-z

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  134. Helvind NM, Andresen K, Rosenberg J. Lower reoperation rates with the use of fibrin sealant versus tacks for mesh fixation. Surg Endosc 2013;27:4184-91. https://doi.org/10.1007/s00464-013-3018-0

  135. Christoffersen MW, Helgstrand F, Rosenberg J, Kehlet H, Bisgaard T. Lower reoperation rate for recurrence after mesh versus sutured elective repair in small umbilical and epigastric hernias. A nationwide register study. World J Surg 2013;37:2548-52. https://doi.org/10.1007/s00268-013-2160-0

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  138. Helgstrand F, Rosenberg J, Kehlet H, Jørgensen LN, Wara P, Bisgaard T. Risk of morbidity, mortality, and recurrence after parastomal hernia repair – a nationwide prospective study. Dis Colon Rectum 2013;56:1265-72. https://doi.org/10.1097/dcr.0b013e3182a0e6e2

  139. Helgstrand F, Tenma J, Rosenberg J, Kehlet H, Bisgaard T. High agreement between the Danish ventral hernia database and hospital files. Dan Med J 2013;60:A4708.

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  142. Henriksen NA, Helgstrand F, Vogt KC, Jørgensen LN, Bisgaard T; Danish Hernia Database; Danish Vascular Registry. Risk factors for incisional hernia repair after aortic reconstructive surgery in a nationwide study. J Vasc Surg 2013;57:1524-30. https://doi.org/10.1016/j.jvs.2012.11.119

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  144. Henriksen NA, Sørensen LT, Bay-Nielsen M, Jørgensen LN. Direct and recurrent inguinal hernias are associated with ventral hernia repair: a database study. World J Surg 2013;37:306-11. https://doi.org/10.1007/s00268-012-1842-3

  145. Vad MV, Frost P, Bay-Nielsen M, Svendsen SW. Impact of occupational mechanical exposures on risk of lateral and medial inguinal hernia requiring surgical repair. Occup Environ Med 2012;69:802-9. Vad MV, Frost P, Bay-Nielsen M, Svendsen SW. Impact of occupational mechanical exposures on risk of lateral and medial inguinal hernia requiring surgical repair. Occup Environ Med 2012;69:802-9. https://doi.org/10.1136/oemed-2012-100787

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  147. Henriksen NA, Thorup J, Jørgensen LN. Unsuspected femoral hernia in patients with a preoperative diagnosis of recurrent inguinal hernia. Hernia 2012;16:381-5. https://doi.org/10.1007/s10029-012-0924-3

  148. Jørgensen LN, Friis-Andersen H, Bay-Nielsen M, Kehlet H. Dansk Herniedatabase. Ugeskr Læger 2012;174:2522.

  149. Bischoff JM, Linderoth G, Aasvang EK, Werner MU, Kehlet H. Dysejaculation after laparoscopic inguinal herniorrhaphy: a nationwide questionnaire study. Surg Endosc 2012;26:979-83. https://doi.org/10.1007/s00464-011-1980-y

  150. Rosenberg J, Bisgaard T, Kehlet H, Wara P, Asmussen T, Juul P, Strand L, Andersen FH, Bay-Nielsen M; Danish Hernia Database. Danish Hernia Database recommendations for the management of inguinal and femoral hernia in adults. Dan Med Bull 2011;58:C4243.

  151. Bisgaard T, Kehlet H, Bay-Nielsen M, Iversen MG, Rosenberg J, Jørgensen LN. A nationwide study on readmission, morbidity, and mortality after umbilical and epigastric hernia repair. Hernia 2011;15:541-6. https://doi.org/10.1007/s10029-011-0823-z

  152. Helgstrand F, Rosenberg J, Kehlet H, Bisgaard T. Low risk of trocar site hernia repair 12 years after primary laparoscopic surgery. Surg Endosc 2011;25:3678-82. https://doi.org/10.1007/s00464-011-1776-0

  153. Helgstrand F, Rosenberg J, Kehlet H, Bisgaard T. Nationwide analysis of prolonged hospital stay and readmission after elective ventral hernia repair. Dan Med Bull 2011;58:A4322.

  154. Kjaergaard J, Bay-Nielsen M, Kehlet H. Mortality following emergency groin hernia surgery in Denmark. Hernia 2010;14:351-5. https://doi.org/10.1007/s10029-010-0657-0

  155. Helgstrand F, Rosenberg J, Bay-Nielsen M, Friis-Andersen H, Wara P, Jørgensen LN, Kehlet H, Bisgaard T. Establishment and initial experiences from the Danish Ventral Hernia Database. Hernia 2010;14:131-5. https://doi.org/10.1007/s10029-009-0592-0

  156. Bisgaard T, Bay-Nielsen M, Kehlet H. Groin hernia repair in young males: mesh or sutured repair? Hernia 2010;14:467-9. https://doi.org/10.1007/s10029-010-0669-9

  157. Helgstrand F, Rosenberg J, Jørgensen LN, Kehlet H, Bisgaard T. Surgical treatment of ventral hernia. Ugeskr Laeger 2010;172:1987-9.

  158. Bisgaard T, Kehlet H, Bay-Nielsen M, Iversen MG, Wara P, Rosenberg J, Friis-Andersen HF, Jørgensen LN. Nationwide study of early outcomes after incisional hernia repair. Br J Surg 2009;96:1452-7. https://doi.org/10.1002/bjs.6728

  159. Rosenberg J, Bay-Nielsen M. Current status of laparoscopic inguinal hernie repair in Danmark. Hernia 2008;12:583-587. https://doi.org/10.1007/s10029-008-0399-4

  160. Kehlet H, Bay-Nielsen M. Nationwide quality improvement of groin hernia repair from the Danish Hernia Database of 87,840 patients from 1998 to 2005.Hernia 2008;12:1-7. https://doi.org/10.1007/s10029-007-0285-5

  161. Bisgaard T, Bay-Nielsen M, Kehlet H. Re-recurrence after operation for recurrent inguinal hernia. A nationwide eight years follow-up study on the role of repair. Ann Surg 2008;247:707-11. https://doi.org/10.1097/sla.0b013e31816b18e3

  162. Bay-Nielsen M, Kehlet H. Anaesthesia and postoperative morbidity after elective groin hernia repair - a nationwide study. Acta Anaesthesiol Scand 2008;52:169-74. https://doi.org/10.1111/j.1399-6576.2007.01514.x

  163. Aasvang EK, Brandsborg B, Christensen B, Jensen TS, Kehlet H. Neurophysiological characterisation of postherniorrhaphy pain. Pain 2008;137:173-81. https://doi.org/10.1016/j.pain.2007.09.026

  164. Kehlet H, Bay-Nielsen M. Standard procedure for standard patients? In: Schumpelick V and Fitzgibbons RJ, eds. Recurrent hernia. Berlin: Springer Verlag, 2007:385-90.

  165. Bay-Nielsen M, Kehlet H. How to create a hernia - Bassini. In: Schumpelick V and Fitzgibbons RJ, eds. Recurrent hernia - prevention and treatment. Berlin: Springer Verlag, 2007:255-257.

  166. Aasvang EK, Kehlet H. Chronic pain after childhood groin hernia repair. J Pediatr Surg 2007;42:1403-8. https://doi.org/10.1016/j.jpedsurg.2007.03.042

  167. Bisgaard T, Bay-Nielsen M, Christensen IJ, Kehlet H. Risk of recurrence 5 years or more after primary Lichtenstein mesh and sutured inguinal hernia repair. Br J Surg 2007;94:1038-40. https://doi.org/10.1002/bjs.5756

  168. Aasvang EK, Bay-Nielsen M, Kehlet H. Pain and function impairment six years after inguinal herniorrhaphy. Hernia 2006;10:316-21. https://doi.org/10.1007/s10029-006-0098-y

  169. Aasvang EK, Møhl B, Bay-Nielsen M, Kehlet H. Pain-related sexual dysfunction after inguinal herniorrhaphy. Pain 2006;122:258-63. https://doi.org/10.1016/j.pain.2006.01.035

  170. Bay-Nielsen M, Kehlet H. Inguinal herniorrhaphy in women. Hernia 2006;10:30-3. https://doi.org/10.1007/s10029-005-0029-3

  171. Wara P, Bay-Nielsen M, Juul P, Bendix J, Kehlet H. Prospective nationwide analysis of laparoscopic vs. Lichtenstein repair of inguinal hernia. Br J Surg 2005;92:1277-81.https://doi.org/10.1002/bjs.5076 

  172. Kehlet H, Bay-Nielsen M. Anaesthesia for inguinal herniorrhaphy – is it evidence based ? A nationwide study in Denmark 1998 – 2003. Acta Anaesthesiol Scand 2005;49:143-6. https://doi.org/10.1111/j.1399-6576.2004.00600.x

  173. Andersen FH, Nielsen K, Kehlet H. Combined ilioinguinal blockade and local infiltration anaesthesia for groin hernia repair-a double-blind randomized study. Br J Anaesth 2005;94:520-3. https://doi.org/10.1093/bja/aei083

  174. Jensen P, Bay-Nielsen M, Kehlet H. Planned inguinal herniorrhaphy - but no hernia sac? Hernia 2004; 8:193-5. https://doi.org/10.1007/s10029-004-0211-z 

  175. Bay-Nielsen M, Nilsson E, Nordin P, Kehlet H. Chronic pain after open mesh vs. sutured repair of indirect inguinal hernia in young males. Br J Surg 2004;91:1372-6. https://doi.org/10.1002/bjs.4502

  176. Bay-Nielsen M, Thomsen H, Andersen FH, Bendix JH, Sørensen OK, Skovgaard N, Kehlet H. Short convalescence in inguinal hernia repair – limiting factors and recurrence. Br J Surg 2004;91:362-7. https://doi.org/10.1002/bjs.4437

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  178. Andersen FH, Bay-Nielsen M, Bak-Christensen A, Nielsen K, Struckmann J, Kehlet H Ingvinalherniotomi i speciallægepraksis og hospitalsregi i Danmark. Ugeskr Læger 2003;165:2373-6.

  179. Kehlet H, Bay-Nielsen M. Rekonvalescensanbefalinger efter brokkirurgi. Månedsskr Prak Lægegern 2003;81:45-7.

  180. Kehlet H, Bay-Nielsen M. Have we defeated the recurrence in the groin ? An epidemiological approach: Denmark. In: Hernia Meshes (Schumpelick V, Nyhus LM, eds). 2003, Springer Verlag, Berlin, p 13-20.

  181. Kehlet H, Dahl JB. Spinal anaesthesia for inguinal hernia repair? Acta Anaesthesiol Scand 2003;47:1-2. https://doi.org/10.1034/j.1399-6576.2003.470101.x

  182. Jensen P, Mikkelsen T, Kehlet H. Postherniorrhaphy urinary retention – effect of local, regional and general anaesthesia: a review. Reg Anesth Pain Med 2002;27:612-7. https://doi.org/10.1053/rapm.2002.37122

  183. Kehlet H, Bay-Nielsen M, Kingsnorth A. Chronic post-herniorrhaphy pain – a call for uniform assessment. Hernia 2002;6:178-81. https://doi.org/10.1007/s10029-002-0082-0

  184. Mikkelsen T, Bay-Nielsen M, Kehlet H. Risk of femoral hernia after inguinal herniorrhaphy. Br J Surg 2002;89:486-8.  https://doi.org/10.1046/j.0007-1323.2002.02058.x

  185. Bay-Nielsen M, Nordin P, Nilsson E, Kehlet H. Operative findings in recurrent hernia after Lichtenstein procedure. Am J Surg 2001;182:134-6. https://doi.org/10.1016/s0002-9610(01)00674-2

  186. Kehlet H, White PF. Optimising anesthesia for inguinal herniorrhaphy: general, regional or local anesthesia? Anesth Analg 2001;93:1367-9. https://doi.org/10.1097/00000539-200112000-00001

  187. Bay-Nielsen M, Kehlet H, Strand L, Malmstrom J, Andersen FH, Wara P, Juul P, Callesen T, for the Danish Hernia Database Collaboration. Quality assessment of 26,304 herniorrhaphies in Denmark: a prospective nationwide study. Lancet 2001;358:1124-8.  https://doi.org/10.1016/s0140-6736(01)06251-1

  188. Bay-Nielsen M, Perkins FM, Kehlet H. Pain and functional impairment 1 year after inguinal herniorraphy: a nationwide questionnaire study. Ann Surg 2001;233:1-7. https://doi.org/10.1097/00000658-200101000-00001.

  189. Kehlet H, Wara P, Andersen FH, Strand L, Juul P, Malmstrøm J, Callesen T, Bay-Nielsen M. Dansk Herniedatabase – det første år. Ugeskr Læger 2000;162:1552-5.

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