Why Knee Replacements Are Tougher Than Hips
I have been working with total joint replacement clients for a decade, and it has always baffled me why total knee replacement rehab is so much more difficult than total hip replacement.
How come hip replacement patients are often back to golf in 3 months, while knee replacement patients still struggle with pain, sleep, and normal walking?
The Medical Community’s Role in Recovery Struggles
Recently, I had an epiphany—it was our fault. The medical community is setting knee replacement patients up for failure. Here’s an example.
I recently had a client who came to see me 3 months after his knee replacement. His knee was still not straight, it hurt to walk and sleep, and he couldn’t do anything the surgeon promised.
He had done everything asked of him during rehab, from in-home therapy to outpatient sessions. Yet, he was frustrated.
The Problem With “Pushing Through”
Everyone had the same approach: push as hard as possible. When pushing didn’t work and caused more pain, they pushed harder.
When that failed, the surgeon ordered the Extensionator—a machine that straps the leg down and pumps air pressure to force the knee straight. It didn’t work.
The client was in terrible pain every session, and recovery took 36 hours afterward. His therapist and surgeon told him the solution was simple: “Ice, ice, baby!”
But research shows otherwise.
Why Icing and Pushing Don’t Work
Studies show that patients who ice may feel better in the first 72 hours, but they report much worse outcomes at 6 months. They develop more fibrotic tissue and lower function.
So I had to ask:
- Why isn’t pushing working?
- Why won’t the knee straighten when it was straight during surgery?
- And most of all—why keep pushing when it clearly fails?
With the definition of insanity being “trying the same thing and expecting different results,” I chose a new approach.
Understanding Pain in Knee Rehab
Pain is a warning signal from the brain. It tells us something is dangerous—even when it isn’t. While the brain has good intentions, it sometimes makes recovery harder.
For 3 months, this client’s body had learned to guard against therapists pushing on his knee. Each session reinforced that straightening the knee meant danger and pain.
No wonder he wasn’t improving.
A Smarter Approach to Straightening the Knee
So how do you get the knee straight without endless pushing?
The first step is relaxation. We used soft tissue massage, dry needling, and desensitization techniques to break the pain cycle.
Once relaxed, the client finally felt a proper stretch in the back of his leg—not sharp knee pain.
Next, we added neuromuscular techniques like contract-relax hamstring work in a prone position. Since this position wasn’t perceived as threatening, the brain allowed deeper knee extension without guarding.
We then introduced sled pulling, where the client walked backward and “pushed” the ground away. This mimicked an NFL cornerback backpedal. It trained the leg to use full extension without triggering fear or pain.
The Key to Walking Normally Again
Getting the knee to extend passively is one thing. Teaching the brain to use that motion while walking is the true turning point.
If we had kept pushing on his knee, he would never have regained full range of motion—or walked normally again.
The medical community might have called him “one of the unlucky ones.” But the truth is, their methods created his poor outcome.
The Broken Cycle of Traditional Rehab
Here’s the cycle patients are trapped in:
Push on knee → Trigger pain → Push harder → Cause inflammation → Ice it (which increases fibrosis) → Slight recovery → Repeat.
It’s no surprise this doesn’t work.
What Patients Need to Know
If you or someone you love is having a knee replacement, please share this article. The more people understand what pain really is—and how to overcome it—the faster and fuller recovery becomes.
The idea that pushing harder will straighten your knee is outdated. It didn’t work decades ago, and it doesn’t work now.
Protect yourself. Protect your knee. Arm yourself with knowledge and be your own best advocate.
