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Related Concept Videos

Structural Joints: Synovial Joints01:16

Structural Joints: Synovial Joints

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...
Knee Joint01:23

Knee Joint

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.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
Development of the Limb Synovial Joints01:07

Development of the Limb Synovial Joints

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...
Tissue Membranes01:27

Tissue Membranes

A tissue membrane is a thin layer of cells that covers the outside of the body, the organs, internal passageways that lead to the exterior of the body, and the lining of the moveable joint cavities. There are two basic types of tissue membranes— connective tissue and epithelial membranes.
Connective Tissue Membranes
The connective tissue membrane is formed solely from connective tissue. These membranes encapsulate organs, such as the kidneys, and line our movable joints. A synovial membrane is...
Joints01:26

Joints

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...
Structural Classification of Joints01:20

Structural Classification of Joints

Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...

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Related Experiment Video

Updated: May 25, 2026

Isolation and Culture of Primary Synovial Macrophages and Fibroblasts from Murine Arthritis Tissue
09:18

Isolation and Culture of Primary Synovial Macrophages and Fibroblasts from Murine Arthritis Tissue

Published on: February 24, 2023

The normal synovium.

Malcolm D Smith1

  • 1Rheumatology Unit, Repatriation General Hospital, Daws Road, Daw Park, South Australia, SA 5041, Australia.

The Open Rheumatology Journal
|January 27, 2012
PubMed
Summary
This summary is machine-generated.

This study details normal synovium structure and function, covering its cells, nerves, and blood supply for joint homeostasis. Understanding this baseline is crucial for recognizing synovial membrane changes in inflammatory arthritis like Rheumatoid Arthritis.

Keywords:
Normal synovial membranealterations in inflammatory arthritis.functionnerve supplystructurevascular supply

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A Friction Testing-Bioreactor Device for Study of Synovial Joint Biomechanics, Mechanobiology, and Physical Regulation
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A Friction Testing-Bioreactor Device for Study of Synovial Joint Biomechanics, Mechanobiology, and Physical Regulation

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Isolation and Culture of Primary Synovial Macrophages and Fibroblasts from Murine Arthritis Tissue
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Isolation and Culture of Primary Synovial Macrophages and Fibroblasts from Murine Arthritis Tissue

Published on: February 24, 2023

A Friction Testing-Bioreactor Device for Study of Synovial Joint Biomechanics, Mechanobiology, and Physical Regulation
09:48

A Friction Testing-Bioreactor Device for Study of Synovial Joint Biomechanics, Mechanobiology, and Physical Regulation

Published on: June 2, 2022

Area of Science:

  • Orthopedics
  • Immunology
  • Histology

Background:

  • The synovial membrane is a critical joint component responsible for lubrication and nutrient supply.
  • Understanding normal synovial tissue is fundamental to comprehending joint pathologies.
  • Inflammatory arthritides, such as Rheumatoid Arthritis, involve significant synovial membrane alterations.

Purpose of the Study:

  • To elucidate the detailed structure and physiological functions of the normal synovium.
  • To describe the cellular composition, nerve innervation, and vascularization of healthy synovial tissue.
  • To establish the role of normal synovium in maintaining joint homeostasis.

Main Methods:

  • Histological examination of synovial tissue.
  • Immunohistochemical analysis for cellular markers.
  • Vascular and nerve staining techniques.
  • Review of existing literature on synovial physiology.

Main Results:

  • Detailed description of synovial lining layer (intima) and sublining layer (stroma).
  • Identification of key cell types including synoviocytes (Type A and B) and macrophages.
  • Characterization of the rich vascular network and sensory/autonomic nerve supply.
  • Demonstration of mechanisms by which synovium regulates synovial fluid composition and joint lubrication.

Conclusions:

  • The normal synovium possesses a complex, highly organized structure essential for joint health.
  • Its cellular and vascular components actively participate in maintaining joint homeostasis.
  • Deviations from this normal structure and function underlie the pathogenesis of inflammatory joint diseases like Rheumatoid Arthritis.