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Related Concept Videos

Ankle Joint01:10

Ankle Joint

3.4K
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...
14.6K

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Related Experiment Video

Updated: Apr 23, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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Evaluating component migration after modular stem fixed-bearing total ankle replacement.

Stephen A Brigido1, Garrett M Wobst2, Melissa M Galli2

  • 1Fellowship Director, Foot and Ankle Reconstruction, Foot and Ankle Department, Coordinated Health, Bethlehem, PA.

The Journal of Foot and Ankle Surgery : Official Publication of the American College of Foot and Ankle Surgeons
|September 22, 2014
PubMed
Summary
This summary is machine-generated.

This study found that implant migration in total ankle replacement increases over time and is greater in males. The measurement technique used is reliable for assessing this migration.

Keywords:
ankle joint surgeryjoint prosthesisosteoarthritissubsidencetotal ankle replacement (TAR)

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering
  • Radiographic Analysis

Background:

  • Implant migration in modular stem fixed-bearing total ankle replacement has not been previously studied.
  • Assessing implant migration is crucial for understanding prosthetic longevity and patient outcomes.

Purpose of the Study:

  • To evaluate the reliability of a novel measurement technique for assessing implant migration.
  • To quantify implant migration over a two-year period following total ankle replacement.
  • To identify predictors of implant migration, including time and patient demographics.

Main Methods:

  • A prospective study involving twenty patients who received third-generation modular stem fixed-bearing total ankle prosthetics.
  • Radiographic measurements of implant location were taken immediately post-surgery, at 1 year, and at 2 years.
  • Inter-rater and intra-rater reliability of the measurement technique were assessed using intraclass correlation coefficients.

Main Results:

  • The proposed measurement technique demonstrated high reliability (ICC [2,1] = 0.993, ICC [1,1] = 0.997).
  • Mean implant migration was 0.7 mm at 1 year and 1.0 mm at 2 years.
  • Time and male gender were significant predictors of increased implant migration (R² = 0.27, p = .008), with males exhibiting greater migration.

Conclusions:

  • The developed radiographic measurement technique is reliable for assessing implant migration in total ankle replacement.
  • Implant migration significantly increases over two years and is more pronounced in males.
  • These findings provide initial clinical guidelines for short-term acceptable migration and highlight the need for long-term studies to correlate migration with implant failure.