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Related Concept Videos

Knee Joint01:23

Knee Joint

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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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Structural Joints: Synovial Joints01:16

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Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
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Updated: May 20, 2025

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Bionic menisci with integrated material-structure-functionality for gouty arthritis.

Cijun Shuai1, Shun Hu2, Kangdong Wang2

  • 1Jiangxi Province Key Laboratory of Additive Manufacturing of Implantable Medical Device, Jiangxi University of Science and Technology, Nanchang 330013, China; State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; Shenzhen Institute of Information Technology, School of Sino-German Robotics, Shenzhen 518172, China.

Colloids and Surfaces. B, Biointerfaces
|April 3, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed advanced bionic menisci to treat gouty arthritis. These implants reduce uric acid and oxidative stress, offering a personalized therapeutic approach for patients with meniscal damage.

Keywords:
Bionic designGouty arthritisMeniscusNanozymeSelective laser sintering

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Orthopedic Surgery

Background:

  • Gouty arthritis can lead to meniscal damage, often requiring meniscus replacement surgery.
  • Post-surgery, the meniscus is vulnerable to urate crystal buildup and oxidative stress, complicating treatment.
  • Existing treatments lack targeted approaches for the unique challenges of gouty arthritis in meniscal tissues.

Purpose of the Study:

  • To design and develop tri-level bionic menisci with integrated material-structure-functionality for gouty arthritis treatment.
  • To address post-surgical risks of urate crystal accumulation and oxidative stress in replaced menisci.
  • To create a personalized therapeutic model for modulating intra-articular uric acid levels.

Main Methods:

  • Fabrication of a gradient network bionic meniscus scaffold using 3D printing.
  • Incorporation of platinum-cerium oxide (Pt-CeO2) nanozymes within the meniscus scaffold.
  • Design of a bionic structure informed by articular cavity biomechanical data.
  • Utilizing DFT+U calculations to elucidate nanozyme catalytic mechanisms.

Main Results:

  • The bionic menisci effectively mimicked natural structures, offering biomechanical adaptation.
  • Pt-CeO2 nanozymes demonstrated significant catalytic activity in oxidizing uric acid and scavenging reactive oxygen/nitrogen species.
  • A regulatory model was developed to personalize intra-articular uric acid concentration management.

Conclusions:

  • The developed bionic menisci offer a novel, integrated solution for managing gouty arthritis post-meniscus replacement.
  • The nanozyme-loaded scaffold effectively targets urate crystals and oxidative stress.
  • This technology shows promise for personalized, targeted treatment of gouty arthritis.