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Related Concept Videos

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
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Related Experiment Video

Updated: Oct 1, 2025

Human Cartilage Tissue Fabrication Using Three-dimensional Inkjet Printing Technology
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Human Cartilage Tissue Fabrication Using Three-dimensional Inkjet Printing Technology

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3D Printing for Bone-Cartilage Interface Regeneration.

Jialian Xu1, Jindou Ji2, Juyang Jiao1

  • 1Department of Bone and Joint Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Frontiers in Bioengineering and Biotechnology
|March 3, 2022
PubMed
Summary

Three-dimensional (3D) printing offers a promising strategy for regenerating challenging osteochondral defects by enabling precise reconstruction of the bone-cartilage interface. This technology addresses limitations of current treatments by facilitating tissue regeneration rather than mere repair.

Keywords:
3D printingbone repairchondral regenerationreconstructive implantregenerative medicine

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Orthopedic Surgery

Background:

  • Osteochondral defects are difficult to repair due to cartilage's avascular nature and complex zonal architecture.
  • Current treatments like joint replacement and bone grafts primarily repair rather than regenerate tissues.
  • The bone-cartilage interface is critical for successful osteochondral defect repair.

Purpose of the Study:

  • To review the progress and applications of 3D printing technology in regenerating the bone-cartilage interface.
  • To discuss the potential future prospects of 3D printing for osteochondral reconstruction.
  • To highlight current challenges in applying 3D printing for osteochondral defects.

Main Methods:

  • Review of recent advancements in 3D printing for bone and cartilage reconstruction.
  • Analysis of hybrid materials and bioink strategies for osteochondral applications.
  • Examination of challenges in simulating histological structures and achieving dual bioactivity.

Main Results:

  • Three-dimensional (3D) printing provides a novel strategy for osteochondral defect treatment, overcoming limitations of traditional methods.
  • 3D printing allows for rapid, accurate, and personalized reconstruction of bone and cartilage tissues.
  • Optimizing bioink concentrations and identifying biomaterials with dual bioactivities are key challenges for effective regeneration.

Conclusions:

  • 3D printing technology holds significant potential for advancing osteochondral defect regeneration.
  • Successful regeneration relies on precisely mimicking the complex structure of the bone-cartilage interface.
  • Further research is needed to address challenges in material selection and process optimization for clinical translation.