Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Ankle Joint01:10

Ankle Joint

3.0K
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...
3.0K
Hypothesis: Accept or Fail to Reject?01:17

Hypothesis: Accept or Fail to Reject?

29.5K
The outcome of any hypothesis testing leads to rejecting or not rejecting the null hypothesis. This decision is taken based on the analysis of the data, an appropriate test statistic, an appropriate confidence level, the critical values, and P-values. However, when the evidence suggests that the null hypothesis cannot be rejected, is it right to say, 'Accept' the null hypothesis?
There are two ways to indicate that the null hypothesis is not rejected. 'Accept' the null...
29.5K
Components of Stress01:23

Components of Stress

537
Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and...
537
Components of Language01:24

Components of Language

821
Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
821
Vector Algebra: Method of Components01:08

Vector Algebra: Method of Components

19.5K
It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
19.5K
Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

1.3K
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
1.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Is It Necessary to Repair the Plantar Plate in the Management of Metatarsophalangeal Joint Instability?

Clinics in podiatric medicine and surgery·2026
Same author

A novel mineral-organic bone adhesive promotes calvarial bone regeneration in microgravity conditions.

NPJ microgravity·2026
Same author

In Vitro Modulation of Murine Tenocyte Behavior by Hyperbaric Oxygen Therapy.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society·2026
Same author

Assessing Lisfranc Instability With Triplanar Weightbearing CT Alignment: Standardized Second Metatarsal Dorsal Offset.

Foot & ankle orthopaedics·2026
Same author

Friction and Cartilage Wear in Hemiarthroplasty: A Systematic Review of Key Influencing Factors.

Lubricants (Basel, Switzerland)·2026
Same author

Toughness measures in solid-state composites of ultra-high molecular weight polyethylene.

Journal of the mechanical behavior of biomedical materials·2025

Related Experiment Video

Updated: Feb 4, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

43.9K

Analysis of Failed Ankle Arthroplasty Components.

Barbara H Currier1, Paul J Hecht2, James A Nunley3

  • 11 Thayer School of Engineering, Dartmouth College, Hanover, NH, USA.

Foot & Ankle International
|October 10, 2018
PubMed
Summary

Revision of total ankle arthroplasty is often due to loosening in fixed-bearing designs and polyethylene fracture in gamma-sterilized implants. Understanding these failure modes can improve future ankle replacement surgeries and patient outcomes.

Keywords:
polyethylene oxidationretrieval analysistotal ankle prostheses

More Related Videos

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
09:01

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

Published on: January 24, 2018

12.4K
A Mouse Model of Ankle-Subtalar Complex Joint Instability
09:14

A Mouse Model of Ankle-Subtalar Complex Joint Instability

Published on: October 28, 2022

1.9K

Related Experiment Videos

Last Updated: Feb 4, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

43.9K
Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
09:01

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

Published on: January 24, 2018

12.4K
A Mouse Model of Ankle-Subtalar Complex Joint Instability
09:14

A Mouse Model of Ankle-Subtalar Complex Joint Instability

Published on: October 28, 2022

1.9K

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Medical device analysis

Background:

  • Total ankle arthroplasty (TAA) is a treatment for end-stage arthritis.
  • TAA revision rates are higher than hip or knee replacements.
  • Understanding TAA failure mechanisms is crucial for improving outcomes.

Purpose of the Study:

  • To analyze retrieved TAA components to identify failure modes.
  • To correlate implant characteristics with revision reasons.
  • To inform clinical decisions for current and future TAA patients.

Main Methods:

  • Analysis of 70 retrieved TAA components from 7 designs (2002-2018).
  • Evaluation of wear, damage, and fixation of metal components.
  • Fourier transform infrared spectroscopy analysis of polyethylene insert oxidation.
  • Correlation of oxidation with polyethylene fatigue and fracture.

Main Results:

  • Loosening was the most common revision reason, more frequent in fixed-bearing designs.
  • Gamma-sterilized polyethylene inserts showed higher oxidation rates and fracture.
  • Polyethylene oxidation correlated with fatigue damage and fracture.

Conclusions:

  • Fixed-bearing TAA designs may have higher loosening rates.
  • Gamma-sterilized polyethylene inserts are susceptible to in vivo fatigue and fracture.
  • Retrieved device analysis provides critical insights for improving TAA design and patient care.