Background: Lumbar hernias arise through posterolateral abdominal wall defects, named inferior triangle (Petit) and superior triangle (Grynfelt). Most of the lumbar hernias are secondary to trauma or previous surgery, while primary lumbar hernias are rare. There are two possible surgical approaches: the anterior approach with lumbar incision and the laparoscopic (transabdominal or totally extraperitoneal) approach. Methods: We present a series of nine surgical procedures for primary lumbar hernia in 7 adult patients (2 affected by bilateral hernias). Seven were Grynfelt hernias, and two were Petit hernias. All surgical repairs were performed using synthetic mesh placed in the extraperitoneal space, below the muscular layers, using a tension-free technique. Results: There was no surgical complication, except for 1 case with a subcutaneous haematoma. The mean hospital stay was 2.3 days. All patients returned to normal daily activities within 15 days after surgery. After a median follow-up period of 25 months, there was no case of recurrence or postsurgical sequelae, such as pain or muscular weakness. Conclusions: Primary lumbar hernias are rare congenital defects of the abdominal wall. Repair of these rare hernias can be successfully performed via the anterior approach with the use of synthetic mesh – this method of repair is easy, safe, and effective.

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