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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

4.0K
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

13.5K
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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A Rat Tibial Growth Plate Injury Model to Characterize Repair Mechanisms and Evaluate Growth Plate Regeneration Strategies
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エピフィーゼのインターフェース

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
まとめ
この要約は機械生成です。

骨格関節炎 (OA) の進行は,関節加熱軟骨 (ACC) と成長板 (GP) の緊張パターンにおける早期の変化と関連しています. これらの発見は,OAの病原性および頭蓋骨の安定性に関する新しい洞察を明らかにします.

キーワード:
関節軟骨は,骨格の軟骨と結晶化したものです.骨の力学 骨の力学成長プレート成長プレートヒアリン軟骨は,ヒアリン軟骨である.マイクロコンピュータトモグラフィーです.骨格関節炎 (Osteoarthritis) が発症している.シンクロトロンコンピュータトモグラフィー

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Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
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Culturing and Measuring Fetal and Newborn Murine Long Bones
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Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
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科学分野:

  • 整形外科とスポーツ医学
  • バイオメディカルイメージング
  • 骨格生物学 骨格生物学について

背景:

  • 骨格関節炎 (OA) は,軟骨の分解と骨の変化によって特徴づけられる変性関節疾患です.
  • 早期発見とOAの病原性の理解は,効果的な治療法の開発に不可欠です.
  • OA発現における関節化軟骨 (ACC) と成長板 (GP) の役割は完全に理解されていません.

研究 の 目的:

  • OAにおける関節と成長板の軟骨中枢界面の相互関連した役割を調査する.
  • 先進的なイメージングを使用して,OAの発達に先立つ初期の構造的および生体力学的変化を明らかにする.
  • エピフィーゼの安定性における成長板構造の機械的機能を調査する.

主な方法:

  • ベンチトップのマイクロコンピュータトモグラフィー (microCT) と高解像度のシンクロトロンCT (sCT) 画像の組み合わせ.
  • 負荷を伴うネズミの膝関節のデジタルボリューム相関 (DVC) 分析.
  • ストレインパターンをモデル化するための有限元シミュレーション.

主要な成果:

  • OAにおける骨性硬化症は,ACCの拡大された地域的拡大に先行する.
  • OA前およびOA領域で観察された変異した骨細胞の隙間数とサイズ.
  • OAに罹患するマウスは,健康な対照群とは異なり,頭部に高ストレスの焦点を示しています.
  • 体内GPブリッジは機械的に感受性があり,ストレスの移転を制御し,体内GPブリッジの安定性を高めます.

結論:

  • 過剰なACC形成は,乱れた内分泌骨格化の早期の結果であり,潜在的にOAを誘発する可能性があります.
  • エピフィーゼ区間の早期のストレスの蓄積は,退行性進行のための関節を優先します.
  • 成長板の架け橋は,機械的なストレスを調整し,頭蓋骨の安定性を確保するための重要な構造です.