thigh, with only fascia and skin over its surface. Deep to the sartorius is the quadriceps femoris muscle.
As it crosses from the lateral to the medial side of the thigh, the sartorius muscle crosses the surfaces of the iliopsoas, pectineus and adductor longus muscles. The tensor fasciae latae muscle originates just lateral to the proximal attachment of the sartorius muscle.
The medial edge of the sartorius forms the lateral border of an important anatomical space known as the femoral triangle. The triangle is completed superiorly by the inguinal ligament and medially by the medial margin of the adductor longus muscle. The structures found within the triangle, the femoral artery, vein and nerve, therefore, lie medial to the sartorius. The femoral artery continues inferiorly, deep to the sartorius.
In order to easily remember the borders of the femoral triangle, you can use the mnemonic SAIL which stands for:
- Sartorius
- Adductor longus
- Inguinal Ligament