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Functional Classification of Joints

Functional Classification of Joints

Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...

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Related Experiment Video

Updated: Jan 13, 2026

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

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

Published on: August 22, 2022

Decoding Temporomandibular Disorders: Identifying Stage-Specific and Functional Patterns in the Articular Disc.

Pascal Eber^1,2, Ana M P Baggio^1,3, Yannick M Sillmann^1,4

¹Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, MA, USA.

Stem Cell Reviews and Reports

|January 7, 2026

Summary

This summary is machine-generated.

Identifying biomarkers in the temporomandibular joint (TMJ) articular disc aids understanding of TMJ disorders (TMD). Classification of these biomarkers aids early detection and personalized treatment strategies for TMD.

Keywords:

Artificial intelligence, bias Biomarker Disease progression Temporomandibular joint disc Temporomandibular joint disorders

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A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle

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Published on: January 11, 2018

Area of Science:

Biomarkers
Immunohistochemistry
Temporomandibular Joint Disorders (TMD)

Background:

Temporomandibular disorders (TMD) affect ~30% of the population, with unclear pathogenesis.
Disc displacement and degeneration are linked to biomechanical dysfunction.
Articular disc biomarkers are key to understanding TMD mechanisms and improving diagnostics/therapeutics.

Purpose of the Study:

Review immunohistochemical biomarkers in the TMJ articular disc.
Focus on internal derangement and disc displacement.
Correlate biomarkers with clinical, radiological, and histological findings for functional and stage-specific relevance.

Main Methods:

Systematic literature search of databases and journals.
Included studies used immunohistochemistry and control groups.
Analyzed biomarker patterns, clinical, radiological, histological findings, and demographics per PRISMA guidelines.

Main Results:

Included 511 patients (579 samples) and 132 controls (158 samples).
Identified 24 biomarkers involved in inflammation, ECM remodeling, and degeneration.
Classified biomarkers by function and stage for early detection, staging, and personalized treatment.

Conclusions:

Disc biopsy provides insights into TMD progression from displacement to degeneration.
Clinical utility of disc biopsy is limited by invasiveness, ethics, and lack of standardized protocols.
Further research needed for validated biomarker profiles and reliable study designs.