Anterior Leg Muscles Flashcards
Tibialis Anterior Origin
Lateral Surface of the Tibia
Tibialis Anterior Attachment
Medial Cuneiform and Base of metatarsal I
Tibialis Anterior Action
Dorsiflexion (strongest muscle of)
Inversion of the foot
Tibialis Anterior Innervation
Deep Fibular Nerve (L4/L5)
Extensor Digitorum Longus Origin
Lateral Condyle of the Tibia and Medial Surface of the Fibula
Extensor Digitorum Longus Attachment
Dorsal Surface of the Lateral 4 Digits
Extensor Digitorum Longus Action
Dorsiflexion of the Foot
Extension of the Lateral 4 digits/toes
Extensor Digitorum Longus Innervation
Deep Fibular Nerve (L4/L5)
Extensor Hallucis Longus Origin
Medial Surface of the Fibular Shaft
Extensor Hallucis Longus Attachment
Base of the Distal Phalanx of the Great Toe
Extensor Hallucis Longus Action
Dorsiflexion of the foot
Extension of the great toe
Extensor Hallucis Longus Innervation
Deep Fibular Nerve (L4/L5)
Fibular Tertius Origin
Originates with the Extensor Digitorum Longus at the Medial Surface of the Fibula
Fibular Tertius Attachment
Diverges away from Extensor Digitorum Longus and attaches to Metatarsal V
Fibular Tertius Action
Eversion and Dorsiflexion of the foot.
Fibular Tertius Innervation
Deep Fibular Nerve (L4/L5)
Which Muscle of the Anterior Compartment is considered the Deepest?
Extensor Hallucis Longus
Which Muscle of the Anterior Compartment is considered the most Anterior?
Tibialis Anterior
Which Muscle of the Anterior Compartment is considered the most Lateral?
Flexor Digitorum Longus
Clinically, what is seen with damage/lesion to the Common or Deep Fibular nerve?
Foot Drop - Paralysis of the Anterior Compartment means there is no Dorsiflexion to oppose Plantarflexion.
What may a Patient do to overcome Foot Drop?
Eversion Flick - twist foot laterally to prevent it trailing on the floor as they walk.
