McBurney's point


McBurney's point
McBurney's point
McBurney's point.jpg
Location of McBurney's point (1), located two thirds the distance from the umbilicus (2) to the anterior superior iliac spine (3).
Surface projections of the organs of the trunk.png
Surface projections of the organs of the trunk, with McBurney's point labeled with a red circle at bottom left at the inferior part of the cecum.

McBurney's point is the name given to the point over the right side of the abdomen that is one-third of the distance from the anterior superior iliac spine to the navel. This point roughly corresponds to the most common location of the base of the appendix where it is attached to the cecum.[1]

Contents

Clinical relevance

Normal location of the appendix relative to other organs of the digestive system (anterior view). Cecum and appendix are visible at bottom left.

Deep tenderness at McBurney's point, known as McBurney's sign, is a sign of acute appendicitis.[2] The clinical sign of referred pain in the epigastrium when pressure is applied is also known as Aaron's sign. Specific localization of tenderness to McBurney's point indicates that inflammation is no longer limited to the lumen of the bowel (which localizes pain poorly), and is irritating the lining of the peritoneum at the place where the peritoneum comes into contact with the appendix. Tenderness at McBurney's point suggests the evolution of acute appendicitis to a later stage, and thus, the increased likelihood of rupture. Other abdominal processes can also sometimes cause tenderness at McBurney's point. Thus, this sign is highly useful but neither necessary nor sufficient to make a diagnosis of acute appendicitis. Also, the anatomical position of the appendix is highly variable (for example in retrocaecal appendix, an appendix behind the caecum), which also limits the use of this sign as many cases of appendicitis do not cause point tenderness at McBurney's point. For most open appendectomies (as opposed to laparoscopic appendectomies), the incision is made at McBurney's point.

Eponym

The sign is named for Charles McBurney (surgeon), U.S. surgeon, 1845–1913.[3]

As a matter of fact McBurney himself did not locate "his" point in such a precise way in his original article.

Experience with early operative interference in cases of disease of the vermiform appendix. New York Medical Journal, 1889, 50: 676-684. Page 678:

The seat of greatest pain, determined by the pressure of one finger, has been very exactly between an inch and a half and two inches from the anterior spinous process of the ilium on a straight line drawn from that process to the umbilicus.

References

  1. ^ Kyung Won, PhD. Chung (2005). Gross Anatomy (Board Review). Hagerstown, MD: Lippincott Williams & Wilkins. pp. 255. ISBN 0-7817-5309-0. 
  2. ^ "Definition: McBurney's sign from Online Medical Dictionary". http://cancerweb.ncl.ac.uk/cgi-bin/omd?McBurney's+sign. Retrieved 2007-12-06. 
  3. ^ Charles McBurney (www.whonamedit.com)

External links

  • Naraynsingh V, Ramdass MJ, Singh J, Singh-Rampaul R, Maharaj D (2003). "McBurney's point: are we missing it?". Surgical and radiologic anatomy : SRA 24 (6): 363–5. doi:10.1007/s00276-002-0069-7. PMID 12652363. 

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Look at other dictionaries:

  • McBurney's point — Mc·Bur·ney s point mək bər nēz n a point on the abdominal wall that lies between the navel and the right anterior superior iliac spine and that is the point where most pain is elicited by pressure in acute appendicitis McBurney Charles (1845… …   Medical dictionary

  • McBurney's point — the point on the abdomen that overlies the anatomical position of the appendix and is the site of maximum tenderness in acute appendicitis. It lies one third of the way along a line drawn from the anterior superior iliac spine (the projecting… …   The new mediacal dictionary

  • McBurney's point — noun a point one third of the way along a line drawn from the hip to the umbilicus; the point of maximum sensitivity in acute appendicitis • Hypernyms: ↑point …   Useful english dictionary

  • McBurney's point — noun A point of the skin one third of the distance from the ASIS to the umbilicus …   Wiktionary

  • McBurney incision point sign — Mc·Bur·ney incision, point, sign (mək burґne) [Charles McBurney, New York surgeon, 1845–1913] see under incision, point, and sign …   Medical dictionary

  • Point, McBurney's — McBurney s point is the most tender area of the abdomen of patients in the early stage of appendicitis. McBurney s point is named after the 19th century New York surgeon Charles McBurney (1845 1913) who was the leading authority in his day on the …   Medical dictionary

  • Point de mac burney — Point de Mc Burney Pour les articles homonymes, voir Burney. Localisation du Point de Mc Burney. Point de McBurney (M). Point situé à la jonction du 1/3 extern …   Wikipédia en Français

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  • McBurney-Punkt — 1: McBurney Punkt; 2: Bauchnabel; 3: rechter Darmbeinstachel Der McBurney Punkt bezeichnet eine Stelle zwischen dem äußeren und mittleren Drittel der Verbindungslinie zwischen dem rechten vorderen oberen Darmbeinstachel (Spina iliaca anterior… …   Deutsch Wikipedia

  • Point de Mc Burney — Pour les articles homonymes, voir Burney. Localisation du Point de Mc Burney au point 1. Point de McBurney (M). Point situé au tiers externe de la ligne reliant l’épine iliaque antéro supérieure droite à l’ …   Wikipédia en Français