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Knee Joint

Knee Joint

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...

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...

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...

Development of the Limb Synovial Joints

Development of the Limb Synovial Joints

Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...

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Related Experiment Video

Updated: Jan 11, 2026

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint

Published on: July 22, 2021

2050: An Arthroplasty Odyssey.

Eloy Del Río¹

¹Independent Researcher, 11520 Cádiz, Spain.

Healthcare (Basel, Switzerland)

|November 13, 2025

Summary

The future of joint replacement hinges on proactive strategies addressing the osteoarthritis epidemic and resource scarcity. Sustainable healthcare requires a holistic approach to ensure equitable access to arthroplasty by 2050.

Keywords:

climate change/crisis/emergency critical material scarcity energy transition/renewable energy integration/electrification health economics health equity and disparities joint replacement surgery net-zero emissions/decarbonization osteoarthritis epidemic preventive health/sustainable green policy supply chain risk management

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Last Updated: Jan 11, 2026

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint

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Published on: September 7, 2022

Area of Science:

Arthroplasty and joint health research.
Healthcare sustainability and policy.
Materials science and resource management.

Background:

The global osteoarthritis epidemic necessitates innovative solutions for joint health.
The transition to a carbon-free economy by 2050 presents challenges for healthcare.
Critical raw material scarcity and supply chain fragility pose risks to medical services.

Purpose of the Study:

To analyze the trajectory of arthroplasty towards 2050.
To identify potential clinical, economic, and material risks associated with decarbonization.
To advocate for a holistic, equitable, and sustainable approach to arthroplasty services.

Main Methods:

Perspective-based analysis of current trends and future challenges.
Scenario illustration and conditional comparative trend analysis.
Review of medical innovation, socioeconomic factors, and sustainability pursuits.

Main Results:

The Net Zero transition may cause financial instability and healthcare disruptions.
Supply chain fragility and rising costs can exacerbate inequities in joint replacement access.
Business-as-usual assumptions highlight multifaceted risks to arthroplasty services.

Conclusions:

Coordinated strategies are essential to navigate the complexities of healthcare decarbonization.
Multidisciplinary dialogue and policy alignment are crucial for resilient arthroplasty.
Ensuring an ethical, equitable, and sustainable future for joint replacement services is paramount.