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Download Activity – Analyzing the Fibularis Muscles (Fibularis Longus and
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Activity – Analyzing the Fibularis Muscles (Fibularis Longus and Fibularis Brevis) Note: Theses muscles are also known as the “Peroneals” In this activity we will use the "3 Rules of Muscles" to determine the joint actions of the Fibularis Muscles. Answer the questions below: Ankle Joint Actions Word Bank Action Plantar Flexion Dorsiflexion Inversion Eversion Plane Sagittal Sagittal Frontal Frontal Knee Joint Actions Word Bank Action Flexion Extension Tibia Internal Rotation Tibia External Rotation © 2014 Brent Brookbush Plane Sagittal Sagittal Transverse Transverse 1. What joint do the fibularis muscles cross? Ankle 2. The malleoli could be viewed as the axis, or pivot point of the ankle joint. The fibularis muscles cross the ankle posterior to the lateral malleoli. Does this imply that contraction of the fibularis muscles will contribute to dorsiflexion, or plantar flexion? Plantar Flexion 3. The fibularis muscles cross the lateral side of the ankle and foot. When the fibularis muscles contract, what frontal plane joint action will they contribute to? Eversion 4. Re-write your answers into one succinct table? Fibularis Muscles o Joint crossed: Ankle o Actions: Plantar flexion and eversion Check your answers! © 2014 Brent Brookbush
