Inversion, Eversion, Plantar Flexion, & Dorsiflexion

Which Muscles perform ankle eversion? In which compartments of the lower leg are these muscles found.

• Fibialis Brevis (Lateral Compartment)

• Fibialis Longus (Lateral Compartment)

• Fibularis Tertius (Anterior Compartment)

Which Muscles perform ankle plantar flexion? In which compartments of the lower leg are these muscles found.

• Fibularis Longus (Lateral Compartment)

• Fibularis Brevis (Lateral Compartment)

• Gastrocnemius (Posterior compartment - Superficial)

• Plantaris (Posterior Compartment - superficial )

• Saleus (Posterior Compartment - Superficial)

• TIbialis Posterior (Posterior Compartment - Deep)

• Flexor Digitorum Longus (Posterior Compartment - Deep)

• Flexor Hallicus Longus (Posterior Compartment - Deep)

Which Muscles perform ankle dorsiflexion? In which compartments of the lower leg are these muscles found.

• Tibialis Anterior (anterior compartment) 

• Extensor Digitorum Longus (anterior compartment) 

• Extensor Hallicus Longus (anterior compartment) 

• Fibularis Tertius (anterior compartment) 

Tibialis anterior is a major muscle for ankle dorsiflexion & inversion. 

Describe the line of pull of the muscle relative to both the medial-lateral axis of dorsiflexion/plantar flexion, as well as the anterior-posterior axis of inversion/eversion 

The tibialis anterior lies laterally to the medial-lateral axis which allows for dorsifexion since it lies in front of the ankle joint pulling to perform dorsiflexion 

The tibialis anterior also runs medial to the anterior/posterior axis pulling the ankle inward for inversion