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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-20511

Beer, G M; Schuster, A; Seifert, Burkhardt; Manestar, M; Mihic-Probst, D; Weber, S A (2009). The normal width of the linea alba in nulliparous women. Clinical Anatomy, 22(6):706-711.

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Abstract

The function of the linea alba is to maintain the abdominal muscles at a certain proximity to each other. In the case of long-lasting increased intra-abdominal pressure, the linea alba widens. Yet, as the existence of the linea a priori implicates a physiological distance between the two rectus muscles, the question arises as to what the normal width of the linea alba is. To evaluate the normal width of the linea alba, we examined 150 nulliparous women between 20 and 45 years of age with a body mass index < 30 kg m(-2) by ultrasound at three reference points: the origin at the xiphoid and 3 cm above and 2 cm below the umbilicus. The examination revealed a broad range of widths at the three reference points. The linea was widest at 3 cm above the umbilicus (-35 mm), followed by the reference point 2 cm below the umbilicus (-31 mm) and the origin at the xiphoid (-31 mm). The mean width was 7 +/- 5 mm at the xiphoid and 13 +/- 7 mm above and 8 +/- 6 mm below the umbilicus. For the definition of the normal width of the linea, the 10th and 90th percentiles were taken. The linea alba can be considered "normal" up to a width of 15 mm at the xiphoid, up to 22 mm at the reference point 3 cm above the umbilicus and up to 16 mm at the reference point 2 cm below the umbilicus in nulliparous women.

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Epidemology, Biostatistics and Prevention Institute (EBPI)
04 Faculty of Medicine > University Hospital Zurich > Institute of Surgical Pathology
04 Faculty of Medicine > Institute of Anatomy
DDC:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2009
Deposited On:01 Sep 2009 12:14
Last Modified:03 Mar 2014 07:32
Publisher:Wiley-Blackwell
ISSN:0897-3806
Publisher DOI:10.1002/ca.20836
PubMed ID:19637295
Citations:Web of Science®. Times Cited: 12
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Scopus®. Citation Count: 15

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