To analyze and evaluate the feasibility and safety of reconstruction following en bloc resection of the iliac-inguinal region in tumors involving both the anterior and lateral pelvis, based on the musculopectineal orifice repair principle.

A retrospective analysis was conducted on 6 patients who underwent en bloc resection and reconstruction of the iliac-inguinal region in the Department of Colorectal Surgery, the Second Affiliated Hospital of Naval Medical University from January to December 2024. The key technical strategies of musculopectineal orifice-based reconstruction were explored.

All 6 patients successfully completed the procedure, including resection and reconstruction of the inguinal ligament (6 patients), visceral sac reconstruction (5 patients), and resection with reconstruction of the external iliac vessels (4 patients ). The median operative time was 360 (300, 435) minutes, with median intraoperative blood loss of 450 (200, 600) ml. Postoperative outcomes included: median flatus passage at 4 (3, 5) days and median hospitalization duration of 6.5 (6, 14) days. Postoperative histopathological examination and follow-up confirmed R0 resection. There was no limb ischemia/necrosis, severe edema, abdominal wall hernia recurrence, intestinal obstruction, or enteric fistula after operation, and no other serious complications occurred.

Musculopectineal orifice repair principle-guided reconstruction after en bloc resection of the iliac-inguinal region demonstrates both technical feasibility and clinical safety.