A series of 93 patients operated on for groin hernias by applying the preperitoneal approach is reported (89 bilateral and four unilateral). The patients were divided into two groups. Group one included 24 patients without prosthetic repair. Group two included 65 patients who had undergone repair with Ampoxen mesh. Some untraditional methods are reported, such as interparietal repair, rotative transposition of external oblique muscle aponeurosis, etc. As far recurrences are concerned, no differences were recorded between the two groups (Pt greater than 0.05). Of all 193 groin hernias 81% were followed up and the total percentage of recurrences was 4.5%. Slight testicular and neuralgic postoperative complications were reported (three and two patients respectively). The advantages of biomaterials were confirmed by ultrasound examinations of ten patients from both groups. A conclusion is made that hernia repair strategy should be based on natural groin tissue resources.