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Related Concept Videos

Structural Joints: Fibrous Joints01:03

Structural Joints: Fibrous Joints

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...
Structural Joints: Cartilaginous Joints01:17

Structural Joints: Cartilaginous Joints

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 or...
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...
Introduction to Joints00:58

Introduction to Joints

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 movement.
Method of Joints: Problem Solving I01:30

Method of Joints: Problem Solving I

The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint. Consider a truss structure with two forces of 20 N and 10 N acting at joints C and D, respectively. The method of joints can be used to determine the forces FCB, FDC,...
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: May 28, 2026

A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
08:07

A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle

Published on: January 11, 2018

Dynamic Mechanics and Longitudinal Changes in Temporomandibular Joint Structural Integrity.

Jeff C Nickel1,2, Luigi M Gallo3, Yoly M Gonzalez2

  • 1Department of Oral and Craniofacial Sciences, School of Dentistry, Oregon Health & Science University, Portland, Oregon, USA.

Journal of Oral Rehabilitation
|May 27, 2026
PubMed
Summary

Mechanobehaviour Score (MBS) accurately predicts temporomandibular joint (TMJ) changes over time. Lower MBS indicates better TMJ integrity, while higher MBS suggests worsening joint health, aiding in predicting TMJ structural alterations.

Keywords:
computed tomographydynamic mechanicslongitudinalmagnetic resonancemechanobehaviourosteoarthritistemporomandibular joint

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In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

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A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
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In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
07:26

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Area of Science:

  • Biomechanics of the temporomandibular joint (TMJ).
  • Analysis of joint loading behaviors and structural integrity.
  • Application of computational modeling in musculoskeletal research.

Background:

  • Longitudinal changes in temporomandibular joint (TMJ) structures are linked to joint contact mechanics and jaw loading behaviors, quantified by the Mechanobehaviour Score (MBS).
  • Understanding these relationships is crucial for diagnosing and managing TMJ disorders.

Purpose of the Study:

  • To determine if baseline Mechanobehaviour Score (MBS) correlates with longitudinal changes observed in temporomandibular joint (TMJ) structures.
  • To assess the predictive capability of mechanobehavioural variables for TMJ structural integrity over time.

Main Methods:

  • Subjects underwent clinical examinations, cone-beam computed tomography, and magnetic resonance imaging for TMJ assessment.
  • Jaw muscle electromyography and dynamic stereometry were used to calculate duty factors and TMJ energy densities, combined into the MBS.
  • Statistical analyses and machine learning models compared baseline MBS with follow-up TMJ integrity across different outcome groups.

Main Results:

  • A cohort of 43 adult subjects (29 female, 14 male) with an average follow-up of 8 years was analyzed.
  • Significantly lower baseline MBS was observed in subjects whose TMJ integrity improved (Group B) compared to those with stable (Group A) or worsened (Group C) TMJ conditions.
  • Machine learning models achieved high accuracy (0.96) in predicting group outcomes based on TMJ stress-field characteristics.

Conclusions:

  • Baseline Mechanobehaviour Score (MBS) effectively predicts longitudinal changes in temporomandibular joint (TMJ) integrity.
  • Mechanobehavioural variables serve as accurate predictors of alterations in TMJ structure and function over time.