The prevalence of chronic groin pain in athletes and physically active adults is between 5 and 10 % (1-3). The groin area is vulnerable in contact sports such as soccer, ice hockey, and rugby that require sudden muscle contraction around the hip and lower abdomen, repetitive kicking and side-to-side motion. Common causes for chronic groin pain in such sports include adductor tendonitis, musculus rectus abdominis tendopathy, osteitis pubis (edema on MRI scans at pubic symphysis) or disruption of the posterior wall of inguinal canal, which are all referred to as athletic pubalgia (1-3). No exact pathophysiological mechanism for pain has so far been identified in sportsman's hernia (posterior inguinal wall deficiency). A tear of the abdominal wall in posterior inguinal canal or conjoined tendon (tendinopathy), with or without bulging of a hernia, is suggested to be typical for a sportsman's hernia (4-6). The tissue damage is similar as in an incipient direct inguinal hernia with or without bulge. Diagnosis of a sportsman's hernia can only be set in patients having a typical history and having a suspected posterior inguinal wall deficiency on careful clinical examination. Magnetic resonance imaging (MRI) should be performed to exclude other injuries in the groin area. Sometimes also ultrasonography (US) would be added in the diagnostic work-up. Although presenting with similarly symptoms, the clinical entity of ''sportsman's hernia'' is exclusively distinct from athletic pubalgia (7), which includes a more wide range of groin injuries, such as adductor tendonitis and/or inflammation of the pubic symphysis (8,9).

Treatment of chronic groin pain is aimed toward its specific pathology (1-3). The first line of management includes rest, muscle strengthening and stretching exercises, physiotherapy, anti-inflammatory analgesics, as well as local anesthetic and/or corticosteroid injections. In resistant cases, operative treatment might be considered. Various operative approaches in athlete's pubalgia have been proposed depending on the suspected nature of injury. These operative approaches include open (5,10) and laparoscopic methods of hernia repair (11-12), tenotomies of muscle tendons close to the pubic bone (13,14), as well as release or neurectomies of nearby nerves (6-7). The results of operative treatment are good to excellent in 70 to 90% of patients (1-3). There is no evidence-based consensus available to guide surgeons for choosing between various operative treatments of sportsman's hernia/athletic pubalgia (1). Both conventional open and laparoscopic repairs produce good results, although the latter may allow the patient to an earlier return to full sports activity.

Open minimal repair (OMR) technique in local or spinal anesthesia seems to be a promising surgical approach in the treatment of posterior inguinal wall deficiency (10). Recent one-center analysis of this technique reported full freedom of pain in 91% four weeks after operation, full recovery to sports after 2 weeks and good patient's satisfaction in 100%. The laparoscopic techniques are reported to give an excellent outcome in 80-90% of patients. These methods are more expensive and need to be performed under general anesthesia. The studies are also heterogeneous concerning the use of different types of mesh and fixation techniques (11-12). Comparative studies between the OMR technique and laparoscopic treatment of sportsman's hernia/athletic pubalgia are lacking. The OMR technique is developed solely to strengthen the posterior inguinal wall weakness using non-absorbable sutures, but theoretically the TEP technique may heal a wider area in groin utilizing a 10x15 cm mesh placed in the preperitoneal space behind the pubic symphysis and posterior inguinal canal (11).

The aim of this randomized study is to compare the effectiveness of OMR technique in local or spinal anesthesia to TEP technique in general anesthesia for treatment of Sportsman´s hernia/athletic pubalgia with the primary endpoint; patients being totally free from groin pain during sports activity four weeks after surgery.