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Structural Joints: Synovial Joints

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...

Structural Joints: Fibrous Joints

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 Joints

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...

Joints

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...

Method of Joints

Method of Joints

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.
Since plane truss members are in the same plane, each joint is subjected to a coplanar and concurrent force system. To apply the method of joints, the first step is to...

Introduction to Joints

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...

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Related Experiment Video

Updated: Feb 12, 2026

Preliminary Study on Acupuncture Combined with Grain-sized Moxibustion for Treating Rheumatoid Arthritis with Finger Joint Pain

Preliminary Study on Acupuncture Combined with Grain-sized Moxibustion for Treating Rheumatoid Arthritis with Finger Joint Pain

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Treating Congenital Proximal Interphalangeal Joint Contracture.

Sarah M Yannascoli¹, Charles A Goldfarb¹

¹Department of Orthopedic Surgery, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8233, St Louis, MO 63110, USA.

|April 8, 2018

Summary

Congenital proximal interphalangeal joint deformity, or camptodactyly, presents management challenges due to varied causes and treatments. This review clarifies existing literature to guide practical camptodactyly treatment.

Keywords:

Camptodactyly Congenital Contracture Proximal interphalangeal joint

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Implantation of Total Artificial Heart in Congenital Heart Disease

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Published on: July 18, 2014

Area of Science:

Orthopedics
Pediatric Surgery
Hand Surgery

Background:

Congenital proximal interphalangeal joint deformity, or camptodactyly, is a complex condition affecting finger posture.
Etiology and classification of camptodactyly remain debated, leading to diverse treatment strategies.
Lack of standardized management protocols complicates effective intervention for this congenital anomaly.

Purpose of the Study:

To review and synthesize existing literature on camptodactyly.
To provide clarity on the classification and etiology of congenital proximal interphalangeal joint deformity.
To offer practical guidance for the treatment of camptodactyly.

Main Methods:

Comprehensive literature search of studies on camptodactyly.
Analysis of existing data on classification, etiology, and treatment outcomes.
Synthesis of findings to establish a cohesive understanding of the condition.

Main Results:

Identified multiple theories regarding the cause of camptodactyly.
Highlighted significant variations in current classification and treatment approaches.
Synthesized literature to provide a clearer perspective on management.

Conclusions:

Camptodactyly management requires a clear understanding of its varied etiology and classification.
Standardized treatment guidelines are needed for optimal outcomes in congenital proximal interphalangeal joint deformity.
This review offers a practical framework to guide clinicians in treating camptodactyly.