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Ankle and Leg Anatomy

INTRODUCTION. The ankle is a complex mechanism.The unique design of the ankle makes it a very stable joint. This joint has to be stable in order to withstand 1.5 times your body weight when you walk and up to eight times your body weight when you run.. INTRODUCTION. the ankle is actually made

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Ankle and Leg Anatomy

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    1. Ankle and Leg Anatomy By Prof. Dr. Samy A. Nasef Dr: Emad sallam

    2. INTRODUCTION The ankle is a complex mechanism. The unique design of the ankle makes it a very stable joint. This joint has to be stable in order to withstand 1.5 times your body weight when you walk and up to eight times your body weight when you run.

    3. INTRODUCTION the ankle is actually made up of two joints: the subtalar joint and the true ankle joint . the subtalar joint consists of the talus and calcaneus . The subtalar joint allows eversion and inversion movement.

    5. The true ankle joint It also called talocrural or tibiotalar joint The true ankle joint composed of 3 bones: the tibia which forms the medial portion of the ankle the fibula which forms the lateral portion of the ankle the talus under tibia and fibula..

    6. Talus consists of: Trochlea Anterior surface and Posterior surface The true ankle joint is a hinge joint responsible for dorsiflexion and plantarflexion motion of the foot. dorsiflexion and plantarflexion motion of the foot occur in sagittal plane around frontal axis.

    7. Bone Anatomy

    8. Ligament Support of ankle joint The functions of the ankle and foot are Stability and mobility. The ligaments provide stability of the ankle Ligaments of the ankle comprised mainly of the collateral ligaments, both medial and lateral.

    9. Lateral collateral ligaments The lateral collateral ligament prevents excessive inversion. It is considerably weaker than the larger medial ligament and thus sprains to the lateral ligament are much more common. It is made up of 3 individual bands: the anterior talofibular ligament (ATFL) the calcaneofibular ligament(CFL) the posterior talofibular ligament (PTFL).

    10. Medial collateral ligaments (Deltoid ligament) This is located on the medial aspect of the foot. It is the largest ligament but is actually comprised of several sections all fused together. This ligament prevents (eversion) of the ankle. The deltoid ligament is triangular in shape and has superficial and deep layers. It is the most difficult ligament in the foot to sprain.

    11. Deltoid ligament Deltoid ligament consist of 4 parts: Anterior Tibiotalor Tibiocalcaneal Posterior Tibiotalor Tibionavicular

    12. Muscles of the lower leg/ankle There are 4 compartments that make up the lower leg that operate the motions of the ankle. Injury can cause swelling inside these compartments that can lead to tissue death or nerve damage.

    13. Muscles of the lower leg/ankle There are 4 compartments that make up the lower leg that operate the motions of the ankle. Injury can cause swelling inside these compartments that can lead to tissue death or nerve damage.

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