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McBurney's point--fact or fiction?

O M Karim1, A E Boothroyd, J H Wyllie

  • 1Academic Unit of Surgery, Whittington Hospital, London.

Annals of the Royal College of Surgeons of England
|September 1, 1990
PubMed
Summary
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This study redefines the anatomical positions of the cecum and appendix using barium enema examinations. Findings indicate these structures are lower and more medial than previously understood, challenging established surgical landmarks.

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.

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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.