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Related Concept Videos

Spontaneity02:21

Spontaneity

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A spontaneous process is one that occurs naturally under certain conditions. A nonspontaneous process, on the other hand, will not take place unless it is “driven” by the continual input of energy from an external source. Processes have a natural tendency to occur in one direction under a given set of conditions. Water will naturally flow downhill (spontaneous process), but uphill flow (nonspontaneous process) requires outside intervention such as the use of a pump. Iron exposed to...
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Structural Joints: Synovial Joints01:16

Structural Joints: Synovial Joints

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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...
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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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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...
4.0K
Joints01:26

Joints

35.5K
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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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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Related Experiment Video

Updated: Jan 25, 2026

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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Spontaneous Temporomandibular Joint Dislocation.

Samuel Ruiz1, Rizal Lim2

  • 1General Surgery Resident Physician.

The Journal of Craniofacial Surgery
|May 4, 2019
PubMed
Summary
This summary is machine-generated.

Temporomandibular joint (TMJ) dislocation occurs when the condyle moves from the glenoid fossa. This case highlights managing acute TMJ dislocation with multiple predisposing factors using maxillomandibular fixation.

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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
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Area of Science:

  • Dentistry
  • Orthodontics
  • Oral Surgery

Background:

  • Temporomandibular joint (TMJ) dislocation is the displacement of the condylar head from the glenoid fossa.
  • Anterior dislocations are the most common, often associated with prognathism, anterior crossbite, and open bite.

Observation:

  • This case involves acute spontaneous TMJ dislocation.
  • Multiple predisposing factors were identified in the patient.

Findings:

  • Manual reduction was performed for the acute dislocation.
  • Maxillomandibular fixation was required due to multiple predisposing factors.

Implications:

  • Identifying predisposing factors is crucial for effective TMJ dislocation management.
  • Maxillomandibular fixation may be necessary for complex acute TMJ dislocations.
  • This case underscores the importance of a comprehensive approach to TMJ dislocation treatment.