Objectives-The aim of this retrospective multicentric study was to assess the complications of the Longo technique for the treatment of haemorrhoidal disease. Methods-From March 1999 to April 2003, 550 patients underwent a stapled hemorrhoidectomy following Longo’s technique in 12 surgical units in the Rhne-Alpes Region. The operative indications were the same as for conventional hemorrhoidectomy. Complications were divided into early or late complications depending on whether they occurred before or after the 7 th day. For each patient, the most serious complication was retained for analysis. Results-One hundred and five patients (19%), mean age 51 years, experienced complications. The early complications were bleeding (1.8%), severe anal pain (2.3%), urinary retention (0.9%) and sepsis (0.5%). Late complicationswere chronic anal pain (1.6%), suture dehiscence (1.6%), anal stricture (1.6%) , anal fissure (0.9%), ex- ternal thrombosis (0.9%), fistulae and intramural abscesses (0.9%), anal incontinence (0.3%), haemorrhoidal disease symptoms persistence or recurrence (3.2%). Strictures were successfully dilated, fissures were treated by sphincterotomy, external thromboses were excised and fistulae were laid open. Most of the recurrences were treated with the Milligan-Morgan hemorroidectomy technique. Conclusion-Complications may occur after stapled hemorrhoidopexy, some are particularly serious, especially bleeding and sepsis. Objectives-The aim of this retrospective multicentric study was to assess the complications of the Longo technique for the treatment of haemorrhoidal disease. Methods-From March 1999 to April 2003, 550 patients underwent a stapled hemorrhoidectomy following Longo’s technique in 12 surgical units in the Rh Operativene-Alpes Region. The operative indications were the same as for conventional hemorrhoidectomy. Complications were divided into early or late complications depending on whether they occurred before or after the 7th day. For each patient, the most serious complication was retained for analysis Results-One hundred and five patients (19%), mean age 51 years, experienced complications. The early complications were bleeding (1.8%), severe anal pain (2.3%), urinary retention (0.9%) and sepsis (1.6%), anal stricture (1.6%), anal fissure (0.9%), extremil thrombosis (0.9%), fistulae and intramural abscesses , anal incontinence (0.3%), haemorrhoidal disease symptoms persistence or recurrence (3.2%). Strictures were successfully dilated, fissures were treated by sphincterotomy, external thromboses were excised and fistulae were laid open. Most of the recurrences were treated with the Milligan- Morgan hemorroidectomy technique. Conclusion-Complications may occur after stapled hemorrhoidopexy, some are particularly serious, especially bleeding and sepsis.