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Questions and Answers
Which primary muscles are involved in ankle eversion from plantar flexion?
Which primary muscles are involved in ankle eversion from plantar flexion?
What is the range of motion for ankle eversion from plantar flexion?
What is the range of motion for ankle eversion from plantar flexion?
What effect does weakness of ankle eversion from plantar flexion have?
What effect does weakness of ankle eversion from plantar flexion have?
What is the origin of the peroneus longus muscle?
What is the origin of the peroneus longus muscle?
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What accessory muscle assists in ankle eversion?
What accessory muscle assists in ankle eversion?
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What is the action of the peroneus brevis muscle?
What is the action of the peroneus brevis muscle?
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Which nerve innervates the peroneus muscles?
Which nerve innervates the peroneus muscles?
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What effect does contracture of ankle eversion from plantar flexion have?
What effect does contracture of ankle eversion from plantar flexion have?
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Flashcards
Primary ankle everters (plantar flexion)
Primary ankle everters (plantar flexion)
The main muscles responsible are peroneus longus and peroneus brevis.
Ankle eversion range of motion
Ankle eversion range of motion
The foot can evert usually 15-25 degrees from a plantarflexed position.
Peroneus Longus origin
Peroneus Longus origin
Originates from the lateral condyle of tibia and upper fibula.
Peroneus Longus insertion
Peroneus Longus insertion
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Peroneus Brevis origin
Peroneus Brevis origin
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Peroneus Brevis insertion
Peroneus Brevis insertion
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Peroneal Nerve
Peroneal Nerve
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Accessory ankle everters
Accessory ankle everters
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Study Notes
Ankle Eversion from Plantar Flexion
- Primary Muscles:
- Peroneus longus
- Peroneus brevis
- Accessory Muscles:
- Extensor digitorum longus
- Peroneus tertius
- Range of Motion (ROM):
- Foot eversion: 15° to 25°
- Peroneus Longus Anatomy:
- Origin: Lateral condyle of tibia, head of fibula, upper two-thirds of lateral fibula shaft
- Insertion: Base of first metatarsal, medial cuneiform
- Peroneus Longus Action:
- Plantar flexes and everts the foot
- Supports lateral longitudinal and transverse arches
- Innervated by the peroneal nerve
- Peroneus Brevis Anatomy:
- Origin: Lower two-thirds of lateral fibular shaft
- Insertion: Base of 5th metatarsal
- Peroneus Brevis Action:
- Plantar flexes and everts the foot
- Supports the lateral longitudinal arch
- Innervated by the peroneal nerve
- Effects of Weakness:
- Decreases strength of foot eversion and plantar flexion of the ankle joint
- Allows a varus position of the foot
- Effects of Contracture:
- Results in an everted or valgus position of the foot
- Additional Effects of Weakness:
- Lessens ability to elevate onto the toes
- Decreases lateral foot stability
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Description
Test your knowledge on ankle eversion from plantar flexion, focusing on the primary and accessory muscles involved. Learn about the anatomy and actions of the peroneus longus and peroneus brevis, as well as the effects of weakness in these muscles. Perfect for students and professionals in sports science and anatomy.
