Name: ankle hinge motion and ligaments
Uploaded: 2023-06-23T15:38:52.000Z
Duration: 1 min 10 s
Channel: JoVE

K12 Standards

ohios-learning-standards-and-model-curriculum

Ohio’s Learning Standards and Model Curriculum

9-12

Human Anatomy and Physiology

Support And Motion

Skeletal System

Ankle Joint

The ankle, or the talocrural joint, is a uniaxial hinge joint that allows two kinds of movements&#8212; dorsiflexion and plantarflexion.
The talus, an ankle bone, articulates with the distal end of the tibia. It also articulates with the medial malleolus of the tibia and the lateral malleolus of the fibula, preventing sideways motion of the talus.
The articular surfaces of the ankle joint are covered by hyaline cartilage, which protects bones from friction and facilitates the joint movement.
The fibrous capsule that surrounds the ankle joint attaches to the articular surfaces of the tibia, the malleoli, and the talus.
In addition, the ankle joint is supported by multiple strong ligaments. For example, on the medial side, the broad deltoid ligament prevents abnormal eversion.
On the lateral side, the anterior and posterior talofibular ligaments and the calcaneofibular ligament block excess inversion of the foot.

ankle joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations with the medial malleolus of the tibia and the lateral malleolus of the fibula, which prevent any side-to-side motion of the talus. The ankle is thus a uniaxial hinge joint that allows only for dorsiflexion and plantar flexion of the foot.
Like the hinge joints of the elbow and knee, the talocrural joint of the ankle is supported by several strong ligaments located on the sides of the joint. These ligaments extend from the medial malleolus of the tibia or lateral malleolus of the fibula and anchor to the talus and calcaneus bones. Since they are located on the sides of the ankle joint, they allow for dorsiflexion and plantarflexion of the foot. They also prevent abnormal side-to-side and twisting movements of the talus and calcaneus bones during eversion and inversion of the foot. On the medial side is the broad deltoid ligament. The deltoid ligament supports the ankle joint and also resists excessive eversion of the foot. The lateral side of the ankle has several smaller ligaments. These include the anterior talofibular ligament and the posterior talofibular ligament, both of which span between the talus bone and the lateral malleolus of the fibula, and the calcaneofibular ligament, located between the calcaneus bone and fibula. These ligaments support the ankle and also resist excess inversion of the foot.
This text is adapted from <a href="https://openstax.org/books/anatomy-and-physiology-2e/pages/">https://openstax.org/books/anatomy-and-physiology-2e/pages/9-6-anatomy-of-selected-synovial-joints</a>

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the ...

Education

JoVE Core

Anatomy and Physiology

Unit 1

The Joints

KEY TERMS AND CONCEPTS

ankle hinge motion and ligaments

The ankle joint is a hinge joint that links the foot and lower leg. It is formed by the talocrural joint, which brings together the talus bone of the foot with the distal ends of the tibia and fibula in the leg. The talus has a square-shaped top surface with three areas of articulation.

The upper part of the talus meets the inferior tibia and carries body weight between the leg and foot. The medial malleolus of the tibia and the lateral malleolus of the fibula hold the talus in place on the sides. This arrangement limits side-to-side motion and helps the ankle move in a controlled way.

Because of this structure, the ankle works as a uniaxial hinge joint. It allows dorsiflexion, which is bending the foot upward, and plantar flexion, which is pointing the foot downward. Like the hinge joints of the elbow and knee, the ankle is supported by strong ligaments on each side of the joint.

These ligaments run from the medial malleolus of the tibia or the lateral malleolus of the fibula to the talus and calcaneus bones. Their position on the sides of the ankle allows dorsiflexion and plantar flexion to occur. At the same time, they help prevent abnormal side-to-side and twisting movements during eversion and inversion of the foot.

On the medial side is the broad deltoid ligament. It supports the ankle joint and resists too much eversion. On the lateral side are the anterior talofibular ligament, the posterior talofibular ligament, and the calcaneofibular ligament. These smaller ligaments support the ankle and help resist excess inversion of the foot.

Ankle Hinge Motion and Ligaments

introduction to joints

Joints: Stability and Movement

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functional classification of joints

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structural classification of joints

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structural joints: fibrous joints

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structural joints: cartilaginous joints

Cartilage Joints in Bones and Growth

Cartilaginous joints are bone connections made with cartilage, a tough but flexible connective tissue. They do not have a joint cavity like synovial joints. Instead, the bones are linked by either hyaline cartilage or fibrocartilage. One type of cartilaginous joint is the synchondrosis, which means bones are joined by hyaline cartilage. A synchondrosis can be temporary or permanent. The temporary form is the epiphyseal, or growth, plate in a growing long bone. This plate is the growing hyaline...

structural joints: synovial joints

Synovial Joints: Mobility and Lubrication

Synovial joints are the body’s most mobile joints. They have a joint cavity, which is a fluid-filled space where the bones meet. Unlike fibrous or cartilaginous joints, the bone surfaces in a synovial joint are not directly joined by fibrous connective tissue or cartilage. This structure lets the bones move smoothly against each other. The walls of the joint cavity are made by the articular capsule, a fibrous connective tissue structure that attaches to each bone just outside the articulating...

articulations of the vertebral column

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knee joint

Knee Joint Ligaments and Menisci

The knee joint is the most complicated joint in the body. It includes three articulations: two tibiofemoral joints and one patellofemoral joint. As a synovial joint, it has a thin articular capsule that partly surrounds the joint cavity. Several ligaments, muscles, and cartilaginous structures help the knee move and stay stable. Seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris muscle group, is the main ligament that stabilizes the...

The ankle joint is a hinge joint that links the foot and lower leg. It is formed by the talocrural joint, which brings together the talus bone of the foot with the distal ends of the tibia and fibula in the leg. The talus has a square-shaped top surface with three areas of articulation. The upper part of the talus meets the inferior tibia and carries body weight between the leg and foot. The medial malleolus of the tibia and the lateral malleolus of the fibula hold the talus in place on the...

development of the limb synovial joints

How Limb Joints Form in the Embryo

Limb synovial joints form during embryonic development as the bones of the arms and legs begin to take shape. The process starts with mesenchyme, the embryonic tissue that gives rise to bones, cartilage, and connective tissues. Mesenchymal stem cells first become chondrocytes, which make hyaline cartilage. This cartilage later becomes the model for each bone and then turns into bone through endochondral ossification. The limbs first appear as small limb buds on the sides of the embryo near the...

key terms and concepts

Learn how the talocrural ankle joint connects the talus, tibia, and fibula, allows dorsiflexion and plantar flexion, and is stabilized by key ligaments.

Ankle Hinge Motion and Ligaments | JoVE K12

anatomy and physiology

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Muscular System

Ankle Hinge Motion and Ligaments

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