McBurney's point--fact or fiction?

Area of Science:

• Radiology
• Anatomy
• Surgical Anatomy

Background:

• Accurate anatomical knowledge of the cecum and appendix is crucial for surgical procedures.
• Established surface landmarks for appendiceal location, like McBurney's point, may not consistently reflect anatomical reality.

Purpose of the Study:

• To precisely determine the anatomical positions of the lower pole of the cecum and the base of the appendix.
• To compare these positions with established surgical teaching and bony landmarks.

Main Methods:

• Anthropometric measurements were conducted on 51 normal, supine barium enema examinations.
• The positions were mapped relative to the anterior superior iliac spine and symphysis pubis.
• Defined quadrants (iliac, umbilical, inguinal, pelvic) based on lateral and interspinous lines.

Main Results:

• The lower pole of the cecum was found in the iliac (12%), inguinal (37%), and pelvic (51%) quadrants.
• The appendix was visualized in 53% of cases, located in the iliac (15%), umbilical (15%), inguinal (11%), and pelvic (59%) quadrants.
• Both cecum and appendix positions were generally lower and more medial than previously described; 70% of appendices lay inferior to the interspinous line.

Conclusions:

• The anatomical positions of the cecum and appendix are significantly lower and more medial than commonly taught.
• Established surgical landmarks, particularly McBurney's point, may be unreliable for locating the appendix.
• Radiological assessment provides a more accurate understanding of cecal and appendiceal topography.