Inguinal ligament

A fibrous band that runs from the pubic bone to the iliac crest, providing structural support in the lower abdomen.

The inguinal ligament is a fibrous structure that extends from the anterior superior iliac spine of the pelvis to the pubic tubercle. It serves as an important landmark in the lower abdomen, forming a part of the inguinal canal and providing support to various structures in the groin region. This ligament also plays a crucial role in containing the contents of the inguinal canal, which includes the spermatic cord in males and the round ligament of the uterus in females.

Terminologia Anatomica

ligamentum inguinale

System

Musculoskeletal system

Function

The primary function of the inguinal ligament is to provide structural support to the lower abdominal wall and reinforce the inguinal canal, which is a crucial area for the passage of reproductive and other structures. It helps to maintain the position of the structures that traverse through the canal, preventing undue pressure that could lead to conditions such as inguinal hernias. In addition, the ligament acts as an attachment point for various muscles, contributing to the stability and flexibility of the pelvis and lower abdomen. This stability is essential for activities such as walking, running, and lifting, where balance and posture are vital. The inguinal ligament also plays a role in sexual function by facilitating the movement of the spermatic cord, which houses blood vessels, lymphatics, and the vas deferens.

Location

The inguinal ligament is located in the lower abdominal region, specifically running between the pubic bone and the iliac crest. It lies just superior to the inguinal canal, which passes through the ligament. The ligament spans approximately 1.2 centimeters in width and connects to various muscle and fascia layers, forming a key part of the groin anatomy. It is situated laterally to the pubic tubercle and medial to the anterior superior iliac spine, making it an essential landmark for surgeons and healthcare professionals when examining the groin and performing surgical procedures in that area. The inguinal ligament plays a crucial role in delineating the boundaries of the inguinal canal, which is clinically important in understanding the pathophysiology of hernias.

Did You Know?

The inguinal ligament is considered a continuation of the external oblique aponeurosis.
In females, the inguinal canal contains the round ligament of the uterus, whereas in males, it contains the spermatic cord.
Inguinal hernias are one of the most common types of hernias, often facilitated by weakened areas near the inguinal ligament.
The inguinal ligament is most commonly used as a landmark in surgical procedures targeting the inguinal region.