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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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Electrical Current01:10

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Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
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Overview of Advanced Functional Groups02:22

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Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
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Eddy Currents01:25

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Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
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Related Experiment Video

Updated: Feb 5, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

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Current Advancements in Ankle Arthrodiastasis.

Jacob Wynes1, Andreas C Kaikis2

  • 1Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD 21043, USA.

Clinics in Podiatric Medicine and Surgery
|September 19, 2018
PubMed
Summary

Ankle arthrodiastasis is a joint salvage procedure for severe ankle osteoarthritis, offering an alternative to fusion or replacement. This technique improves the joint environment, reducing pain by promoting healing and decreasing bone sclerosis.

Keywords:
Ankle arthritisAnkle distractionArthrodiastasisExternal fixationIlizarovSupramalleolar osteotomy

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Area of Science:

  • Orthopedic surgery
  • Regenerative medicine

Background:

  • End-stage ankle osteoarthritis, both primary and posttraumatic, presents a significant clinical challenge.
  • Current treatment options like arthrodesis (fusion) and ankle implant arthroplasty have limitations.
  • Ankle arthrodiastasis presents a joint-preserving alternative for managing severe ankle joint degeneration.

Purpose of the Study:

  • To review recent advancements in ankle arthrodiastasis.
  • To discuss adjunctive procedures that enhance outcomes for ankle osteoarthritis management.
  • To highlight ankle arthrodiastasis as a viable joint salvage option.

Main Methods:

  • Ankle arthrodiastasis involves joint distraction to create a more favorable intraarticular environment.
  • This distraction facilitates hydrostatic pressure equilibration and promotes subchondral bone healing.
  • The technique aims to decrease subchondral sclerosis, a common source of pain in osteoarthritis.

Main Results:

  • Optimized intraarticular environment through distraction.
  • Promotion of subchondral morphoangiogenesis (new blood vessel formation in subchondral bone).
  • Reduction in subchondral sclerosis leading to pain mitigation.

Conclusions:

  • Ankle arthrodiastasis is an effective joint salvage procedure for end-stage ankle osteoarthritis.
  • It offers a promising alternative to more definitive procedures like fusion or joint replacement.
  • New advances and adjunctive techniques are expanding the utility of this approach in managing ankle pain.