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Videos de Conceptos Relacionados

Structural Joints: Cartilaginous Joints01:17

Structural Joints: Cartilaginous Joints

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As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage.
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary...
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Joints01:26

Joints

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Joints, also called articulations or articular surfaces, are points at which ligaments or other tissues connect adjacent bones. Joints permit movement and stability, and can be classified based on their structure or function.
Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial.
Fibrous Joints Are Immovable
The bones of a...
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Development of the Limb Synovial Joints01:07

Development of the Limb Synovial Joints

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Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
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Introduction to Joints00:58

Introduction to Joints

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The adult human body usually has 206 bones, and except for the hyoid bone in the neck, each bone is connected to at least one other bone. Joints are the location where bones come together. Many joints allow for movement between the bones. At these joints, the articulating surfaces of the adjacent bones can move smoothly against each other. However, the bones of other joints may be joined by connective tissue or cartilage. These joints are designed for stability and provide little or no...
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Structural Joints: Fibrous Joints01:03

Structural Joints: Fibrous Joints

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Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
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Sutures of the Skull01:22

Sutures of the Skull

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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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Updated: Feb 24, 2026

A Rat Tibial Growth Plate Injury Model to Characterize Repair Mechanisms and Evaluate Growth Plate Regeneration Strategies
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A Rat Tibial Growth Plate Injury Model to Characterize Repair Mechanisms and Evaluate Growth Plate Regeneration Strategies

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Las interfaces epifisarias son las interfaces epifisarias.

Andrew A Pitsillides1

  • 1Skeletal Biology Group, Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London NW1 0TU, UK.

Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft
|February 22, 2026
PubMed
Resumen
Este resumen es generado por máquina.

La progresión de la osteoartritis (OA) está relacionada con cambios tempranos en los patrones de tensión del cartílago calcificado articular (ACC) y la placa de crecimiento (GP). Estos hallazgos revelan nuevos conocimientos sobre la patogénesis de la OA y la estabilidad epifisaria.

Palabras clave:
El cartílago calcificado articular.Mecánica ósea Mecánica ósea.Placa de crecimiento de la placa.El cartílago hialino es cartilaginoso.Tomografía microcomputada tomografía por computadora.La osteoartritis es una enfermedad de la artrosis.Tomografía computarizada con síncrotrón.

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Área de la Ciencia:

  • Ortopedia y Medicina del Deporte.
  • Imágenes biomédicas de imágenes.
  • Biología esquelética Biología esquelética.

Sus antecedentes:

  • La osteoartritis (OA) es una enfermedad articular degenerativa caracterizada por la ruptura del cartílago y los cambios óseos.
  • La detección temprana y la comprensión de la patogénesis de la OA son cruciales para desarrollar tratamientos efectivos.
  • El papel del cartílago calcificado articular (ACC) y la placa de crecimiento (GP) en el desarrollo de la OA no se entiende completamente.

Objetivo del estudio:

  • Investigar las funciones interconectadas de las interfaces osteocondrales articulares y de la placa de crecimiento en la OA.
  • Para dilucidar los cambios estructurales y biomecánicos tempranos que preceden al desarrollo de OA utilizando imágenes avanzadas.
  • Explorar la función mecánica de las estructuras de las placas de crecimiento en la estabilidad epifisaria.

Principales métodos:

  • Tomografía computarizada combinada (microCT) y tomografía computarizada sincrotrónica (sCT) de alta resolución.
  • Análisis de correlación de volumen digital (DVC, por sus siglas en inglés) en articulaciones de rodilla de ratón con carga.
  • Simulación de elementos finitos para modelar patrones de tensión.

Principales resultados:

  • La esclerosis ósea en la OA es precedida por una expansión amplificada regionalizada del ACC.
  • Número y tamaño alterados de lacunas osteocíticas observados en regiones pre-OA y OA.
  • Los ratones propensos a la OA exhiben focos de alta tensión en el compartimento epifisario, a diferencia de los controles sanos.
  • Los puentes GP intrafisiológicos son mecánicamente sensibles, regulando la transferencia de tensión y mejorando la estabilidad epifisaria.

Conclusiones:

  • La formación excesiva de ACC es una consecuencia temprana de la ossificación endocondral interrumpida, lo que podría conducir a la OA.
  • La acumulación temprana de tensión en las articulaciones del compartimento epifisario es primordial para la progresión degenerativa.
  • Los puentes de las placas de crecimiento son estructuras clave para coordinar la tensión mecánica y garantizar la estabilidad epifisaria.