Stephen J. Schueler, M.D.

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Groin Swelling Anatomy

To better understand groin swelling, it helps to understand the anatomy of the inguinal area.

The groin is the region of the body where the thigh meets the abdomen. The three major muscles in the groin include:

  • Iliopsoas:
    • The large muscle that flexes the hip
  • Rectus femoris:
    • Moves the leg toward the opposite leg
  • Sartorius muscle:
    • Rotates the leg at the hip

Lymph glands are also present in the groin. The nodes act as filters to fight infection in the body. Lymph nodes can become swollen in response to inflammation. This can make the groin appear to be swollen.

Last Updated: Nov 3, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Groin Swelling References
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  2. de Hullu JA, van der Zee AG. Groin surgery and the sentinel lymph node. Best Pract Res Clin Obstet Gynaecol. 2003 Aug;17(4):571-89. [12965133]
  3. Harmon KG. Evaluation of groin pain in athletes. Curr Sports Med Rep. 2007 Dec;6(6):354-61. [18001606]
  4. Malek S, Torella F, Edwards PR. Emergency repair of groin herniae: outcome and implications for elective surgery waiting times. Int J Clin Pract. 2004 Feb;58(2):207-9. [15055870]
  5. Mayhew KM, Dundoo M, Dunne EF, Dwinnell BG, Stephens JK. Inguinal lymphadenitis caused by Entamoeba histolytica: case report and literature review. Mayo Clin Proc. 2000 May;75(5):513-6. [10807081]
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