ACSM Personal Trainer Certification 2025 – 400 Free Practice Questions to Pass the Exam

The peroneal muscles, also known as the fibular muscles, primarily facilitate eversion of the foot. These muscles, which include the peroneus longus and peroneus brevis, are located on the lateral aspect of the lower leg. Their anatomical position and fiber direction allow them to perform the action of turning the sole of the foot outward, away from the midline of the body.

Eversion is essential for maintaining balance on uneven surfaces and contributes to the overall stability of the ankle by preventing excessive inversion, which can lead to injuries such as sprains. While dorsiflexion and plantarflexion involve movements of the ankle joint primarily facilitated by other muscle groups, and inflection is not a standard term used in anatomical movements, understanding the specific role of the peroneal muscles in eversion is crucial for personal trainers when developing programs that enhance ankle stability and functional movement patterns.