Researchers at Columbia University in the US have developed a model for a biologic replacement knee joint using 3D printing technology, combining living cells with biodegradable materials. The aim is to help gradually repair damaged tissues and cartilage, a step that could pave the way for new arthritis treatments and reduce the need for traditional artificial joints.
Tests on Human Models
The US Washington Post reported on Thursday that researchers tested the model on a human knee, connecting it to robotic devices that simulate natural joint movement to evaluate its ability to perform knee functions and withstand mechanical stresses. Initial tests showed the model's ability to flex and straighten and withstand pressure simulating fast walking conditions, without recording cracks or failures during the experiments.
Timeline for Clinical Trials
Researchers hope the new biologic joint will offer a more sustainable treatment option. However, determining its ability to restore and maintain knee function in the long term requires waiting for the results of upcoming clinical trials. According to the announced timeline, researchers intend to begin initial tests on humans within 18 months. However, the biologic joint is still in the research and development phase and requires additional experiments to evaluate its safety and efficacy before it can be approved for medical use.
Government Funding and the Scale of the Problem
This project is part of a US research program launched in 2024, with government funding extending for approximately five years, aimed at developing long-term treatments for arthritis. According to the US Centers for Disease Control and Prevention, at least 33 million Americans suffer from arthritis. Cartilage wear is a factor that can cause pain and limit joint movement, especially in the knee. Cartilage regeneration capacity declines with age, and advanced cases may require joint replacement surgery.
The lifespan of traditional artificial joints typically ranges between 15 and 20 years, and some cases may require additional surgical procedures over time.
Source: Syrian Arab News Agency (SANA)
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