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Related Concept Videos

Ankle Joint01:10

Ankle Joint

2.1K
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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Bones of the Lower Limb: Tibia and Fibula01:10

Bones of the Lower Limb: Tibia and Fibula

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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...
6.3K

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Related Experiment Video

Updated: Oct 17, 2025

A Mouse Model of Ankle-Subtalar Complex Joint Instability
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[Controversial issues of chronic ankle instability].

X Ma1

  • 1Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China,

Zhonghua Yi Xue Za Zhi
|October 12, 2021
PubMed
Summary

Chronic ankle instability, often from sports injuries, presents diverse symptoms beyond joint laxity. Current surgical criteria lack objective measures, highlighting the need for deeper research into its mechanisms for better diagnosis and treatment.

Area of Science:

  • Orthopedics
  • Sports Medicine
  • Biomechanics

Background:

  • Chronic ankle instability (CAI) is a common sports injury following initial ankle sprains.
  • CAI is characterized by recurrent sprains, pain, swelling, and a feeling of instability.
  • Existing research struggles to explain the varied symptoms and pathological mechanisms of CAI.

Purpose of the Study:

  • To review the current understanding of chronic ankle instability.
  • To highlight the limitations in current diagnostic and surgical criteria for CAI.
  • To emphasize the need for further research into CAI mechanisms.

Main Methods:

  • Literature review of pathological mechanisms and clinical presentations of CAI.
  • Analysis of current surgical indications for CAI, focusing on mechanical laxity versus subjective symptoms.

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  • Examination of the diagnostic challenges and controversies in managing CAI.

    • Main Results:

    • Most patients with chronic symptoms after lateral ankle sprain do not primarily report mechanical instability.
    • Persistent pain and functional instability are common chief complaints.
    • Current surgical indications for CAI often rely on subjective symptoms, lacking objective indicators.

    Conclusions:

    • The diversity of CAI symptoms is not fully explained by current research on pathological mechanisms.
    • There is a significant gap in objective indicators for surgical intervention in CAI.
    • Further research into the mechanisms of CAI is crucial for developing improved diagnosis and treatment strategies.