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Related Concept Videos

Knee Joint01:23

Knee Joint

1.8K
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.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
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Software-Assisted Quantitative Measurement of Osteoarthritic Subchondral Bone Thickness
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Knee Measurement System with Osteoarthritis Levels Using Artificial Cartilage and Skeletons.

Minchae Kang1, Suyeon Seo1, Hyewon Lee2

  • 1Department of Mechanical Engineering, Advanced Manufacturing & Soft Robotics Lab, Dongguk University, 30 Pildong-ro 1, Jung-gu, Seoul 04620, Republic of Korea.

Biomimetics (Basel, Switzerland)
|March 27, 2024
PubMed
Summary

This study developed a 3D-printed knee measurement system to simulate knee osteoarthritis (OA) progression. The system analyzes joint mechanics across OA stages, aiding personalized diagnostics and surgical planning for degenerative arthritis.

Keywords:
3D printingKellgren–Lawrence gradeartificial jointfour-bar-link theorymimicking knee movementsoft polymersurgical simulator

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Area of Science:

  • Biomechanics
  • Biomedical Engineering
  • Orthopedics

Background:

  • Knee osteoarthritis (OA), or degenerative arthritis, involves irreversible cartilage and bone changes, causing pain and functional impairment.
  • Environmental factors are increasingly contributing to accelerated cartilage degeneration, independent of aging.
  • Rising knee disorder incidence necessitates advanced analysis of knee morphology and kinematics.

Purpose of the Study:

  • To introduce a novel knee measurement system using 3D-printing technology to replicate knee motion.
  • To provide insights into knee mechanics across different stages of osteoarthritis (OA).
  • To explore OA progression using the Kellgren-Lawrence (KL) scale and its impact on joint forces.

Main Methods:

  • Development of a knee simulation system based on the four-bar-link theory.
  • Utilizing 3D-printing technology to create a functional knee model.
  • Incorporating soft tissues and skeletal components for realistic simulation.

Main Results:

  • The system effectively simulates knee motion and analyzes force variations across OA levels (0-4).
  • Demonstrated how cartilage deterioration in OA affects joint movement.
  • Highlighted the system's capability to model OA progression.

Conclusions:

  • The developed OA-based knee measurement system offers a new approach to studying degenerative arthritis.
  • This system can aid in personalized diagnostics for knee disease.
  • It has the potential to enhance surgical planning and the creation of custom prosthetic joints.