The anterior fibers (precommissural fornix) end at the septal nuclei and nucleus accumbens of each half of the brain.

The posterior horizontal fibers retract the mandible while the anterior vertical fibers elevate the mandible.

In this procedure, the superior oblique tendon is split, and the anterior fibers - the fibers most responsible for incyclotorsion - are moved anteriorly and laterally.

The anterior long fibers of the tibial collateral ligament of the knee-joint are attached to it.

The anterior border is rough, for the attachment of the anterior fibers of the deltoid ligament of the ankle-joint.

Their anterior fibers, by drawing the greater trochanter forward, rotate the thigh inward, in which action they are also assisted by the Tensor fasciæ latæ.

The anterior or clavicular fibers arises from most of the anterior border and upper surface of the lateral third of the clavicle.

The anterior fibers are involved in shoulder abduction when the shoulder is externally rotated.

Furthermore, the infraspinatus and the teres minor, along with the anterior fibers of the deltoid muscle, are responsible for external rotation of the arm.