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Related Concept Videos

Knee Joint01:23

Knee Joint

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The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
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Functional Classification of Joints01:09

Functional Classification of Joints

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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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Ankle Joint01:10

Ankle Joint

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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...
3.8K
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...
9.9K
Introduction to Joints00:58

Introduction to Joints

5.8K
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...
5.8K
Joints01:26

Joints

36.7K
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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Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint
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Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint

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Joint instability and osteoarthritis.

Darryl Blalock1, Andrew Miller1, Michael Tilley1

  • 1Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS, USA.

Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
|March 6, 2015
PubMed
Summary
This summary is machine-generated.

Joint instability, often caused by ligament injuries, significantly contributes to osteoarthritis (OA) development. Understanding joint stability mechanisms is key to preventing and treating OA.

Keywords:
joint injuryjoint instabilityjoint stabilityligament injuryosteoarthritis

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Area of Science:

  • Orthopedics
  • Biomechanical Engineering
  • Rheumatology

Background:

  • Joint instability poses a significant clinical and economic burden.
  • Joint instability and damage are strongly linked to osteoarthritis (OA) development.
  • Understanding joint stability physiology is crucial for OA research.

Purpose of the Study:

  • To review the structure and function of joint tissues critical for stability.
  • To summarize mechanisms of ligament injury-induced instability in the knee, ankle, and shoulder.
  • To highlight advances in understanding OA mechanisms driven by joint instability.

Main Methods:

  • Review of joint tissue structure and function, emphasizing periarticular muscles.
  • Summary of ligament injury-associated joint instability mechanisms for key joints.
  • Analysis of recent research on mechanical and biological pathways of instability-induced OA.

Main Results:

  • Periarticular muscles are vital for maintaining joint stability.
  • Ligament injuries in the knee, ankle, and shoulder frequently lead to joint instability.
  • Recent research elucidates mechanical and biological factors in OA pathogenesis due to instability.

Conclusions:

  • Understanding joint stability is essential for addressing OA.
  • Advances in OA mechanisms offer potential for novel clinical interventions.
  • Targeting joint instability may provide new avenues for OA prevention and early treatment.