Determining anatomical position of the umbilicus in Iranian girls, and providing quantitative indices and formula to determine neo-umbilicus during abdominoplasty

 

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ABSTRACT

Background and Aim: The umbilicus plays an important role in the aesthetic appearance of the abdomen. So, its restoration during reconstructive surgeries, such as an abdominoplasty, is a challenge. The aim of this study was to evaluate quantitative indices based on constant skeletal points in the anterior wall of abdomen in order to provide an appropriate site of a neo-umbilicus during an abdominoplasty. Materials and Methods: In this descriptive, cross-sectional study, we enrolled 65 young adult girls (20-25 years old) who were nulliparous, nulligravid, and without any history of surgery. Weight, height, distance from xiphoid to umbilicus (Xu), distance from the pubic symphysis to xiphosternum (Xp), and anterior superior iliac spine (interASIS) distance of the subjects were measured. Data were analysed by SPSS ver. 16 using descriptive statistics and multiple regression tests in order to present a formula (equation). Results: Mean age was 22.74 ± 1.51 years, mean weight 54.98 ± 6.51 kg, mean height 160.91 ± 4.11 cm and body mass index (BMI) was calculated to be 21.25 ± 2.61 kg/m ² . Mean Xp distance was 32.26 ± 2.23 cm and mean Xu distance was 17.11 ± 1.64 cm. Xu/Xp ratio (ratio of umbilicoxiphoid distance to puboxiphoid distance) was 53.06 ± 3.9%. Data were analysed using multiple regression test and likelihood ratio. The formula used in determining the appropriate site of neo-umbilicus during abdominoplasty was suggested: Xu=−0.98 + 0.91Xp − 0.07H. Conclusion: By applying these quantitative methods, the natural site of neo-umbilicus could be determined. This may reduce practice errors and increase patient satisfaction. In addition, these findings provide plausible evidence to defend against possible legal complaints.

• 1 Logan JM, Broughton G. Plastic surgery: Understanding abdominoplasty and liposuction. AORN J 2008,88:587-600.
• 2 Dellon AL. The midline umbilicus. Plast Reconstr Surg 2004,113:1301-2.
• 3 Thomas M, DSilva JA, Menon H, Padubidri R. Deciding the Position of Neoumbilicus in Abdominoplasty: A Novel Idea. Am J Cosmet Surg 2007;24:181.
• 4 Florman LD. Is the umbilicus truly midline? Plast Reconstr Surg 2004;113:1089-90.
• 5 Williams AM, Platt AJ. Relocating the umbilicus in abdominal surgery. Plast Reconstr Surg 2006;117:2528.
• 6 Franco T, Franco D. Neoomphaloplasty: An old and new technique. Aesthetic Plast Surg 1999;23:151-4.
• 7 Kurul S, Uzunismail A. A simple technique to determine the future location of the umbilicus in abdominoplasty. Plast Reconstr Surg 1997;100:753-4.
• 8 Massiha H, Montegut W, Phillips R. A method of reconstructing a natural-looking umbilicus in abdominoplasty. Ann Plast Surg 1997;38:228-31.
• 9 Santanelli F, Mazzocchi M, Renzi L, Cigna E. Reconstruction of a natural-looking umbilicus. Scand J Plast Reconstr Surg Hand Surg 2002;36:183-5.
• 10 Rohrich RJ, Sorokin ES, Brown SA, Gibby DL. Is the umbilicus truly midline? Clinical and medicolegal implications. Plast Reconstr Surg 2003;112:259-63.
• 11 Dubou R, Ousterhout DK. Placement of the umbilicus in an abdominoplasty. Plast Reconstr Surg 1978;61:291-3.
• 12 Abhyankar SV, Rajguru AG, Patil PA. Anatomical localization of the umbilicus: An Indian study. Plast Reconstr Surg 2006;117:1153-7.
• 13 Srinivasan J, Soueid A. Where to Position of the Umbilicus during Abdominoplasty? - Look at the root! J Plast Reconstr Aesthet Surg 2009;62:e536-7.
• 14 Danilla S, Bonasic S. Anatomical localization of the umbilicus: A statistical analysis. Plast Reconstr Surg 2007;119:1123-4.