Ankle Dorsiflexion 1446 H/2024 A.D PDF

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BelievableAphorism2297

Uploaded by BelievableAphorism2297

Jazan University

2024

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ankle dorsiflexion anatomy muscles physiology

Summary

This document is a Jazan University lecture on ankle dorsiflexion. It includes details of the muscles involved, ranges of motion, and effects of weakness, along with diagrams.

Full Transcript

# Ankle Dorsiflexion ### 1446 H/2024 A.D - **Image:** A labelled diagram of ankle dorsiflexion, with the following muscles labelled: - Extensor Digitorum Longus - Tibialis Anterior - Extensor Hallucis Longus - **Manual Muscle Test 200 PHT - Theoretical Part.** - Jazan University, Coll...

# Ankle Dorsiflexion ### 1446 H/2024 A.D - **Image:** A labelled diagram of ankle dorsiflexion, with the following muscles labelled: - Extensor Digitorum Longus - Tibialis Anterior - Extensor Hallucis Longus - **Manual Muscle Test 200 PHT - Theoretical Part.** - Jazan University, College of Nursing and Health Sciences, Physical Therapy Department. ## 23rd lecture, Theoretical Part: Ankle Dorsiflexion **Objectives:** at the end of this lecture the student will be able to: 1. Identify the primary muscles involved in ankle dorsiflexion 2. Identify the range of motion of ankle dorsiflexion 3. Describe effect of weakness of ankle dorsiflexion **Content:** 4. Primary muscles involved in ankle dorsiflexion 5. Range of motion of ankle dorsiflexion 6. Effect of weakness of ankle dorsiflexion ## Ankle Dorsiflexion and Inversion **a. Primary Muscles:** - Tibialis Anterior muscle. **Accessory Muscles:** - Extensor hallucis longus. ### Range of Motion: - The range of ankle dorsiflexion is of 0 to 20 degrees. ### Factors Limiting Motion: 1. Tension of calf muscle. ### Anatomy of tibialis anterior muscle. **Origin:** - Upper half of lateral shaft of tibia and interosseous membrane (Fig.1). **Insertion:** - Inferomedial aspect of medial cuneiform and base of 1st metatarsal. **Action:** - Extends and inverts foot at ankle. - Holds up medial longitudinal arch of foot. **Nerve:** - Deep peroneal nerve **Image:** A labelled diagram illustrating the tibialis anterior muscle and its origin and insertion. - Origin: lateral shaft and condyle of the tibia. - Insertion: medial cuneiform and base of first metatarsal. ### Effects of weakness: - Weakness of tibialis anterior decreases the ability to dorsiflex the ankle joint and allows tendency toward eversion of the foot. ### Substitution - The extensor hallucis longus muscle which have the function of assisting the dorsiflexion with inversion motion may substitute a weak tibialis anterior muscle.

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