The common fibular (peroneal) nerve is primarily associated with which movements?

• A. Plantarflexion and Inversion
• B. Dorsiflexion and Eversion
• C. Knee Extension
• D. Hip Abduction

Answer: (B)

The common fibular (peroneal) nerve mainly controls movements that lift the foot upward and turn the sole outward. It splits into the deep fibular and superficial fibular branches: the deep branch supplies muscles like the tibialis anterior that cause dorsiflexion (lifting the foot), while the superficial branch supplies muscles like the fibularis (peroneus) longus and brevis that cause eversion (turning the sole outward).

In contrast, plantarflexion and inversion are actions of the tibial nerve (gastrocnemius and soleus for plantarflexion; tibialis posterior for inversion). Knee extension is primarily controlled by the femoral nerve, and hip abduction by the gluteal nerves. Therefore, the movements most characteristic of the common fibular nerve are dorsiflexion and eversion.