How Do Cartilage Lubrication Mechanisms Fail in Osteoarthritis? A Comprehensive Review

Area of Science:

• Biomedical Engineering
• Orthopedics
• Tribology

Background:

• Cartilage degeneration is a hallmark of osteoarthritis (OA), particularly in aging individuals.
• The breakdown of articular cartilage (AC) mechanical and tribological properties is primarily linked to lubrication failure.
• Understanding these failures is crucial for improving quality of life and has economic implications.

Purpose of the Study:

• To review advancements in articular cartilage (AC) research, focusing on mechanical and tribological properties.
• To emphasize the role of lubrication in degraded AC and its structure-function relationship.
• To explore the link between AC mechano-tribological properties and degeneration progression.

Main Methods:

• Literature review of scientific developments in articular cartilage (AC).
• Analysis of studies on AC mechanical and tribological properties.
• Investigation into lubrication mechanisms in healthy and degraded AC.

Main Results:

• Degraded AC exhibits compromised mechanical and tribological properties, primarily due to lubrication failure.
• The relationship between AC structure, function, and lubrication is complex and critical to its health.
• Mechano-tribological properties are fundamentally connected to the advancement of cartilage degradation.

Conclusions:

• Lubrication failure is a key factor in articular cartilage (AC) degeneration associated with osteoarthritis (OA).
• Further research into AC mechano-tribology can identify strategies to enhance lubrication efficiency.
• Improving AC lubrication holds potential for mitigating OA progression and enhancing patient quality of life.