Related Experiment Video
Updated: Feb 8, 2026
08:03
An In Vitro Organ Culture Model of the Murine Intervertebral Disc
Published on: April 11, 2017
10.3K
[Research progress on mechanical performance evaluation of artificial intervertebral disc]
Rui Li1, Song Wang2, Zhenhua Liao2
1Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R.China;Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong 518055, P.R.China.
Summary
Evaluating artificial intervertebral disc (AID) mechanical properties is crucial for prosthesis longevity. This study reviews current testing methods, including simulators, in vitro tests, and finite element analysis, to assess AID performance.
Area of Science:
- Biomedical Engineering
- Orthopedic Surgery
- Materials Science
Background:
- The long-term reliability of artificial intervertebral disc (AID) prostheses depends on their mechanical properties.
- Evaluating these properties requires standardized testing methods.
Purpose of the Study:
- To introduce testing standards, equipment, and materials for AID.
- To review the current status of AID mechanical property testing methods.
- To forecast future research trends in AID mechanical performance evaluation.
Main Methods:
- Review of existing literature on AID testing.
- Focus on in vitro specimen testing methods and finite element analysis.
- Analysis of static and dynamic mechanical properties, creep, stress relaxation, pushout, and subsidence tests.
Main Results:
- Summarized experimental techniques and results for in vitro testing of available artificial discs.
- Detailed the research status of finite element analysis methods for AID.
- Identified key areas for future research, including simulators, load parameters, dynamic cycles, motion modes, specimens, and test standards.
Conclusions:
- Standardized and comprehensive mechanical testing is essential for advancing AID technology.
- Future research should focus on refining testing methodologies and exploring new parameters to ensure the safety and efficacy of AID prostheses.
Related Concept Videos
02:07Tumor Progression
7.5K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
7.5K
03:06Reaction Mechanisms
31.0K
Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
31.0K
01:24Natural and Artificial Concepts
576
In psychology, concepts can be divided into two categories: natural and artificial. Natural concepts are formed through direct or indirect experiences. For example, consider the concept of snow. If you live in a place with regular snowfall, such as Essex Junction, Vermont, you know snow through direct experiences. You’ve seen it fall, touched it, shoveled it, and played in it. You recognize its texture, appearance, and even its smell. In contrast, if you live on an island like Saint...
576
03:03mTOR Signaling and Cancer Progression
4.8K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
4.8K
01:58Mechanical Protein Functions
5.7K
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.
5.7K
01:29Pathophysiology of Cardiac Performance
1.6K
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
1.6K