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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 immobile...

Structural Classification of Joints

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...

Classification of Bones

Classification of Bones

The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...

Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

Diabetic Foot Ulcer

Diabetic Foot Ulcer

Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...

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Related Experiment Video

Updated: May 30, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Published on: January 24, 2018

A clinical classification system for rheumatoid forefoot deformity.

Peter F Doorn¹, Noël L W Keijsers, Jacques van Limbeek

¹Department of Orthopedic Surgery, Medical Center Leeuwarden, The Netherlands.

Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons

|July 26, 2011

Summary

A new classification system for the rheumatoid forefoot demonstrates high reliability and clinical relevance. This system correlates forefoot deformity with increased pain and functional loss in patients.

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Evaluating the Function of the Foot Core System in the Elderly

Evaluating the Function of the Foot Core System in the Elderly

Published on: March 11, 2022

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Last Updated: May 30, 2026

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

Published on: January 24, 2018

Evaluating the Function of the Foot Core System in the Elderly

Evaluating the Function of the Foot Core System in the Elderly

Published on: March 11, 2022

Area of Science:

Rheumatology
Orthopedics
Podiatry

Background:

Rheumatoid forefoot deformity involves anatomical changes in MTP joints and plantar soft tissues.
Loss of motion and altered tissue quality contribute to forefoot pathology.

Purpose of the Study:

To introduce and validate a novel classification system for rheumatoid forefoot deformity.
To assess the intra- and interobserver reliability of this new classification.
To determine the clinical relevance of the classification in relation to pain, function, and plantar pressure.

Main Methods:

A cohort of 94 patients with rheumatoid forefoot was classified using the developed system.
Two independent observers assessed forefoot deformities to determine reliability.
Correlation analysis was performed between classification grades and patient-reported pain (VAS), functional scores (FFI), and plantar pressure measurements.

Main Results:

High intra- and interobserver reliability were achieved, as indicated by Cohen's kappa and ICC.
A significant positive trend was observed between increasing classification grades and higher VAS pain scores.
Advancing classification grades correlated with increased difficulty in activities (FFI) and elevated plantar peak pressures under the metatarsals.

Conclusions:

The proposed rheumatoid forefoot classification system is reliable and clinically relevant.
This classification can aid in developing targeted therapeutic algorithms for rheumatoid forefoot.
The system provides a valuable tool for evaluating interventions aimed at improving patient outcomes.