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Biology

Microstructure and Biomechanics of the Intervertebral Disc

Quick fact

The intervertebral disc can experience pressures of over 1 megapascal (about 10 times atmospheric pressure) during daily activities, yet it can maintain its function for decades by balancing fluid flow and biochemical composition.

Why this is interesting

Think of the last time you bent down to pick up something heavy. Your spine cushioned the load—but how does a structure made of tissue absorb such impacts? The answer lies in a clever two-part design that turns pressure into a spring-like response.