Evaluation of the impact of implementing the prone jackknife position for the perineal phase of abdominoperineal excision of the rectum.

Background: Abdominoperineal excision of rectum has been associated with poor oncological specimens and high local recurrence rates in comparison with restorative surgery. The role of recent changes in operative position has yet to be evaluated.

Objectives: This study aimed to determine whether a change in the perineal phase from the Lloyd-Davies position to the prone jackknife position might improve excision margins and oncological outcomes.

Preoperative risk stratification for mortality and major morbidity in major colorectal surgery.

Introduction: Risk stratification in major colorectal surgery, in general, has used preoperative, intraoperative, and postoperative variables, and has been used for purposes of comparative audit. To enable preoperative clinical use, this study aimed to stratify risk by use of preoperative risk factors only.

Methods: This is a single-institutional prospective observational study.