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Related Concept Videos

Ankle Joint01:10

Ankle Joint

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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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Anatomical Movements00:51

Anatomical Movements

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Anatomical movements refer to the various actions or motions that can be performed by the body's joints and muscles. These movements are described using specific terms to provide a standardized way of discussing and understanding the range of motion at different joints.
Here are some common anatomical movements:
Flexion and extension motions are in the sagittal (anterior–posterior) plane of motion. These movements take place at the shoulder, hip, elbow, knee, wrist,...
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Functional Classification of Joints01:09

Functional Classification of Joints

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Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
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Related Experiment Video

Updated: Mar 5, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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Relationship between ankle frontal plane kinematics during different functional tasks.

Luke Donovan1, Mark A Feger2

  • 1University of North Carolina at Charlotte, Department of Kinesiology, 9201 University City Blvd, Belk Building 229, Charlotte, NC 28223, United States.

Gait & Posture
|March 30, 2017
PubMed
Summary
This summary is machine-generated.

Excessive ankle inversion after lateral ankle sprains can lead to instability. This study found strong correlations in ankle motion across walking, step-down, and jump-landing tasks, suggesting a single test may identify abnormal biomechanics.

Keywords:
Chronic ankle instabilityGait retrainingRehabilitation

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Area of Science:

  • Biomechanics
  • Orthopedics
  • Sports Medicine

Background:

  • Increased ankle inversion is linked to lateral ankle sprains and chronic ankle instability (CAI).
  • Current biomechanical assessment tools for excessive inversion are limited.
  • Understanding ankle motion across different tasks is crucial for developing effective evaluation methods.

Purpose of the Study:

  • To analyze the relationship between ankle frontal plane kinematics during walking, step-down, and jump-landing tasks.
  • To determine if a single task or combination of tasks is most appropriate for evaluating patients with potential ankle instability.

Main Methods:

  • Fifty-six recreationally active adults participated.
  • Ankle frontal plane motion was measured during walking, step-down, and jump-landing.
  • Pearson product-moment correlation coefficient (r) was used to analyze kinematic relationships.

Main Results:

  • Strong correlations were found in peak inversion during the aerial phase between step-down and walking (r=0.68) and step-down and jump-landing (r=0.75).
  • Strong correlations were also observed at initial contact between step-down and walking (r=0.73) and step-down and jump-landing (r=0.72).
  • Moderate correlations existed between walking and jump-landing for both aerial and initial contact phases.

Conclusions:

  • The strong relationships in ankle inversion across various tasks suggest that a single evaluation test may be sufficient.
  • This finding supports the potential development of a simplified clinical assessment tool for abnormal ankle biomechanics.