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Related Concept Videos

Knee Joint01:23

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The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
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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.
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Related Experiment Video

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Dual-mobility acetabular components in total hip arthroplasty.

Benjamin A McArthur1, Denis Nam, Michael B Cross

  • 1Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota. Mcarthur.ben@mayo.edu.

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|November 27, 2013
PubMed
Summary

Dual-articulation acetabular components aim to prevent hip dislocation after total hip arthroplasty. This review examines the design

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Dislocation is a major complication of total hip arthroplasty (THA).
  • Implant designs like large-diameter heads and constrained components aim to reduce THA instability.
  • Dual-articulation acetabular components were developed to further mitigate postoperative dislocation risk.

Purpose of the Study:

  • To review the dual-articulation acetabular component design for total hip arthroplasty.
  • To analyze its history, biomechanical principles, indications, contraindications, outcomes, and complications.
  • To provide insights based on extensive European clinical experience.

Main Methods:

  • Review of historical development and biomechanical concepts of dual-articulation components.
  • Analysis of published clinical data, including indications, contraindications, outcomes, and complications.
  • Synthesis of over 20 years of clinical experience, primarily from European studies.

Main Results:

  • Dual-articulation design originated in France in 1975 and has gained popularity in Europe.
  • The design represents a novel surgical option recently approved in the United States.
  • Clinical experience provides a foundation for understanding its efficacy and potential complications.

Conclusions:

  • Dual-articulation acetabular components offer a new approach to reducing dislocation in THA.
  • Understanding the design's history and clinical outcomes is crucial for orthopedic surgeons.
  • Further evaluation of long-term outcomes and complications in diverse patient populations is warranted.