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Related Concept Videos

Muscles of the Leg that Move the Foot and Toes01:28

Muscles of the Leg that Move the Foot and Toes

The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles.
Reflex Activity01:08

Reflex Activity

A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
Pulse Assessment Sites01:11

Pulse Assessment Sites

Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
Bones of the Lower Limb: Tibia and Fibula01:10

Bones of the Lower Limb: Tibia and Fibula

The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...
Ankle Joint01:10

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...

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Related Experiment Video

Updated: Jul 17, 2026

Evaluating the Function of the Foot Core System in the Elderly
08:25

Evaluating the Function of the Foot Core System in the Elderly

Published on: March 11, 2022

[Normal and abnormal imaging of the foot's extensor system].

G Morvan, V Vuillemin-Bodaghi, P Mathieu

    Journal De Radiologie
    |February 15, 2007
    PubMed
    Summary

    Understanding the foot extensor system

    Area of Science:

    • Orthopedic Surgery
    • Anatomy
    • Radiology

    Background:

    • The foot's extensor system relies on the triceps surae muscle and its "driving belt": the Achilles tendon, calcaneus bone, and plantar aponeurosis.
    • This complex anatomical unit is continuous with the triceps surae's fibrous skeleton.

    Observation:

    • Detailed anatomical knowledge of this fibrous skeleton is crucial for understanding extensor system lesions and their imaging.
    • Lesions of the foot's extensor system can be classified into subtypes, each with distinct clinical presentations, imaging characteristics, and treatment protocols.

    Findings:

    • Radiography and ultrasonography are sufficient for diagnosing and monitoring most extensor system lesions.
    • Magnetic resonance imaging (MRI) is necessary for diagnosing less common or more complex lesions.

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    Implications:

    • Accurate anatomical understanding enables precise diagnosis and classification of extensor system injuries.
    • Tailored treatment strategies based on lesion subtype improve patient outcomes.
    • Appropriate use of diagnostic imaging (radiography, ultrasonography, MRI) optimizes patient management.