Is It Your Age… or Your Physiology?

A 2024 study in the Journal of Surgery looked at outcomes after total knee replacement.

Not just the surgery itself—
but what actually influenced recovery.

Here’s what they found:

It wasn’t age.

And it wasn’t whether the surgery was robotic or conventional.

It was physiology.

What Actually Mattered

Patients who were:

  • Better nourished

  • Less frail

  • More physically resilient

Had better outcomes.

Better alignment.
Better recovery.
Better overall results.

Even when robotic surgery was more precise…

That precision didn’t always translate into better function.

What This Means (Outside of Surgery)

We tend to think:

“I’m getting older… things are going to decline.”

But this challenges that.

Your body responds more to:

  • Strength

  • Nutrition

  • Nervous system state

  • Overall capacity

Than it does to the number of birthdays you’ve had.

A Better Way to Think About It

Instead of asking:

“Am I too old for this?”

Ask:

“What is my system capable of right now?”

Because that’s what your body is actually operating on.

The Bigger Picture

This isn’t just about knee replacements.

It applies to:

  • Recovery from injury

  • Chronic pain

  • Energy levels

  • Day-to-day function

Your body isn’t just an age.

It’s a system.

And systems can be improved.

Bottom Line

Age matters.

But it’s not the driver most people think it is.

If you want better outcomes—surgical or not—
focus less on the calendar…

And more on capacity.


Phil Rolfe DPT.

For more articles like this, please visit BodylogicNC.com

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