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Kristoffer Andresen
Inguinal hernias are a protrusion of the peritoneum through a weakening in the groin in which abdominal content (intestines or fat) can herniate and cause a bulge. Inguinal hernias can be painful and require surgery. Worldwide, approximately 20 million patients are operated each year, with 10,000 in Denmark. The repair of inguinal hernias causes pain and 16% of patients experience chronic pain six months after the standard, open, mesh-based Lichtenstein technique. Therefore, surgeons are trying to improve the techniques by finding new ways of operating...
March 2018: Danish Medical Journal
Kristoffer Andresen, Jakob Burcharth, Siv Fonnes, Line Hupfeld, Josephine Philip Rothman, Søren Deigaard, Dorte Winther, Maj-Britt Errebo, Rikke Therkildsen, Dina Hauge, Fritz Søbæk Sørensen, Jesper Bjerg, Jacob Rosenberg
BACKGROUND: Sequelae after inguinal hernia repair include pain-related impairment of sexual function. Pain during intercourse can originate from the scar, scrotum, penis, or during ejaculation. The aim of this study was to investigate if the Onstep technique resulted in better results than the Lichtenstein technique regarding pain-related impairment of sexual function. METHODS: This study was part of the randomized ONLI trial (NCT01753219, Onstep versus Lichtenstein for inguinal hernia repair)...
June 2017: Surgery
G G Koning, P W H E Vriens, F Berrevoet
No abstract text is available yet for this article.
August 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Kristoffer Andresen, Jacob Rosenberg
BACKGROUND: For the repair of inguinal hernias, several surgical methods have been presented where the purpose is to place a mesh in the preperitoneal plane through an open access. The aim of this systematic review was to describe preperitoneal repairs with emphasis on the technique. DATA SOURCES: A systematic review was conducted and reported according to the PRISMA statement. PubMed, Cochrane library and Embase were searched systematically. Studies were included if they provided clinical data with more than 30 days follow up following repair of an inguinal hernia with an open preperitoneal mesh technique...
June 2017: American Journal of Surgery
Kristoffer Andresen, Jakob Burcharth, Siv Fonnes, Line Hupfeld, Josephine Philip Rothman, Søren Deigaard, Dorte Winther, Maj-Britt Errebo, Rikke Therkildsen, Dina Hauge, Fritz Søbæk Sørensen, Jesper Bjerg, Jacob Rosenberg
PURPOSE: The open new simplified totally extraperitoneal (ONSTEP) technique for the repair of inguinal hernia was presented some years ago with promising initial results regarding chronic pain. We conducted a randomized clinical trial investigating the ONSTEP technique versus the Lichtenstein technique with focus on postoperative pain. The aim of this paper was to report the results regarding chronic pain from follow-up at 6 and 12 months for the participants in the ONSTEP versus Lichtenstein trial...
March 2017: Langenbeck's Archives of Surgery
Stéphane Mandigout, Nicolas Vuillerme, Benoit Borel, Anaick Perrochon, Justine Lacroix, Stéphane Mandigout
OBJECTIVE: The aim of this work is to compare the evaluation/measurement of the daily energy expenditure related to physical activity with the use of different actimeters currently available. MATERIAL/PATIENTS AND METHODS: Twenty-four young healthy adults voluntarily participate in this study. Energy expenditure related to the realization of daily physical activities was assessed during 24hours with three accelerometers (Actigraph GT3X-BT, Actical and Stayhealthy RT6) and with a pedometer (ONStep Geonaute)...
September 2016: Annals of Physical and Rehabilitation Medicine
Jacob Rosenberg, Kristoffer Andresen
Inguinal hernia repair is one of the most common surgical procedures and several different surgical techniques are available. The Onstep method is a new promising technique. The technique is simple with a number of straightforward steps. This paper provides a full description of the technique together with tips and tricks to make it easy and without complications.
2016: Surgery Research and Practice
Stina Öberg, Kristoffer Andresen, Jacob Rosenberg
A promising open inguinal hernia operation called Onstep was developed in 2005. The technique is without sutures to the surrounding tissue, causing minimal tension. A specific mesh is used with a memory recoil ring in the border, which may cause pain superficial to the lateral part of the mesh for slender patients. The aim of this study was to illustrate an easy procedure that alleviates/removes the pain. A male patient had persistent pain six months after the Onstep operation and therefore had a ring removal operation...
2016: Case Reports in Surgery
S Öberg, K Andresen, D Hauge, J Rosenberg
PURPOSE: Inguinal hernia repairs should have few complications and a short learning curve. A new operation called Onstep has promising results, but still some recurrences. The aim of the study was to find reasons for recurrence, by studying the re-operations. METHODS: The study is a case series, where 565 patients operated with Onstep at six hospitals between December 2011 and April 2015 were identified. If a recurrence had occurred, the description of the re-operation was studied and compared to the primary Onstep operation...
October 2016: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Kristoffer Andresen, Jannie Laursen, Jacob Rosenberg
Background. When a new surgical technique is brought into a department, it is often experienced surgeons that learn it first and then pass it on to younger surgeons in training. This study seeks to clarify the problems and positive experiences when teaching and training surgeons in the Onstep technique for inguinal hernia repair, seen from the instructor's point of view. Methods. We designed a qualitative study using a focus group to allow participants to elaborate freely and facilitate a discussion. Participants were surgeons with extensive experience in performing the Onstep technique from Germany, UK, France, Belgium, Italy, Greece, and Sweden...
2016: Surgery Research and Practice
Kristoffer Andresen, Jakob Burcharth, Jacob Rosenberg
INTRODUCTION: The optimal repair of inguinal hernias remains controversial. It is recommended that an inguinal hernia be repaired using a mesh, either with a laparoscopic or an open approach. In Denmark, the laparoscopic approach is used in an increasing number of cases. The laparoscopic repair has a learning curve of about 50-100 cases and decreases chronic pain, but slightly increases the risk of serious complications compared with open mesh repairs. Therefore, a simpler kind of operation is needed...
December 2015: Danish Medical Journal
K Andresen, J Burcharth, S Fonnes, L Hupfeld, J P Rothman, S Deigaard, D Winther, M B Errebo, R Therkildsen, D Hauge, F S Sørensen, J Bjerg, J Rosenberg
PURPOSE: Because of the high number of patients with chronic pain following inguinal hernia repair, a new, simple and safe method of repair is needed. Onstep is a new type of inguinal hernia repair that might be able to reduce postoperative acute and chronic pain. The aim of this study was to investigate if there were differences in early postoperative pain during the first 10 days between the Onstep and the Lichtenstein technique. METHODS: This was a double-blinded, randomized clinical trial conducted in five surgical departments in Denmark, from April 2013 to June 2014...
December 2015: Hernia: the Journal of Hernias and Abdominal Wall Surgery
L Kohoutek, J Musil, P Plecháčová, A Gryga
The ONSTEP (Open New Simplified Totally Extraperitoneal) inguinal/femoral hernia repair technique is an innovative procedure presented by Portuguese surgeons Augusto Lourenço and Rui Soares da Costa within the EHS/AHS Congress in March 2012. The first institutions to perform this kind of hernia surgery in the Czech Republic are the Department of Surgery at Prostejov Hospital and the Department of Surgery at Frydlant Hospital. The ONSTEP technique represents a minimally traumatizing frontal approach to inguinal hernia repair using a special self-expanding mesh patch (an oval, anatomically-shaped moderate-pore polypropylene mesh with the circumferential memory-ring consisting of polyethylene terephthalate)...
April 2015: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
Jacob Rosenberg, Kristoffer Andresen, Jannie Laursen
Background. When implementing a new surgical technique, the best method for didactic learning has not been settled. There are basically two scenarios: the trainee goes to the teacher's clinic and learns the new technique hands-on, or the teacher goes to the trainee's clinic and performs the teaching there. Methods. An informal literature review was conducted to provide a basis for discussing pros and cons. We also wanted to discuss how many surgeons can be trained in a day and the importance of the demand for a new surgical procedure to ensure a high adoption rate and finally to apply these issues on a discussion of barriers for adoption of the new ONSTEP technique for inguinal hernia repair after initial training...
2014: Surgery Research and Practice
K Andresen, J Burcharth, J Rosenberg
BACKGROUND AND AIMS: A new technique for the repair of inguinal hernia, called Onstep, has been described. This technique places the mesh in the preperitoneal space medially and between the internal and external oblique muscles laterally. The Onstep technique has not yet been described outside the inventors' departments. This study was based on the first 80 patients operated by the Onstep technique in a general surgical department. The objective of the study was to investigate postoperative pain and complications following the Onstep repair of inguinal hernia...
June 2015: Scandinavian Journal of Surgery: SJS
Kristoffer Andresen, Jakob Burcharth, Jacob Rosenberg
INTRODUCTION: Inguinal hernia is a common condition that affects millions of people world-wide every year. In Denmark (population of 5.5 million), more than 10,000 repairs of inguinal hernias are performed annually. The optimal surgical procedure for mesh placement and fixation is still being debated because of long-term complications such as persisting pain and impairment of sexual function. The Onstep approach is a newer type of groin hernia repair with promising preliminary results in terms of very few cases of chronic pain and recurrences...
November 2013: Danish Medical Journal
A Lourenço, R S da Costa
PURPOSE: Experience with a novel hernioplasty procedure--the ONSTEP approach--for inguinal hernia repair in a large series of patients performed by two surgeons at two institutions is described, focusing in particular on the duration of surgery, the time taken to return to normal activities, chronic pain, complication and recurrence rates. METHODS: Adult patients underwent inguinal hernia repair using the ONSTEP approach. The hernia defect was repaired using a PolySoft™ hernia patch...
June 2013: Hernia: the Journal of Hernias and Abdominal Wall Surgery
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