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Related Concept Videos

Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

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...
Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...
Sutures of the Skull01:22

Sutures of the Skull

The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...

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Related Experiment Video

Updated: Jun 16, 2026

Use of Human Perivascular Stem Cells for Bone Regeneration
07:05

Use of Human Perivascular Stem Cells for Bone Regeneration

Published on: May 25, 2012

Engineered cartilage heals skull defects.

Lan Doan, Connor Kelley, Heather Luong

    American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
    |February 16, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Engineered cartilage from embryonic limb bud cells successfully healed mouse skull defects. This cartilage tissue engineering offers a promising alternative to traditional bone grafting methods.

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    Area of Science:

    • Biomaterials Science
    • Tissue Engineering
    • Regenerative Medicine

    Background:

    • Embryonic limb bud cells possess differentiation potential.
    • Cartilage formation and bone defect healing are critical research areas.

    Purpose of the Study:

    • Differentiate embryonic limb bud cells into cartilage.
    • Characterize the resulting cartilage nodules.
    • Evaluate cartilage's efficacy in healing mouse skull defects.

    Main Methods:

    • Cultured aggregated mouse limb bud cells in a bioreactor for 3 weeks.
    • Implanted differentiated cartilage nodules into mouse skull defects.
    • Monitored healing via microcomputed tomography and histology.

    Main Results:

    • Differentiated nodules consisted mainly of hypertrophic chondrocytes and mineralized significantly.
    • Implanted cartilage promoted complete defect healing by 6 weeks, unlike controls.
    • Histology confirmed bone and cartilage integration and bone formation from implants.

    Conclusions:

    • Bioreactor-engineered cartilage effectively facilitates bone defect repair.
    • Cartilage engineering presents a viable alternative to bone grafting for skeletal defects.