Dr. John Kahl PT, DPT, SCS, CSCS | ACL & Knee Specialist
@acl.rx
đŚľHelping active adults recover from ACL & knee injuries
Build strong, confident knees for sport & life
đĽ 1-on-1 online coaching
Fix Your Kneeđ
Most people are told the actual ACL surgery itself is the hard part...
Once the surgery is done, the rest is supposed to be âjust rehab.â
A few months at a local clinic.
Follow a protocol.
And youâll be back to sports/active lifestyle in 9 months.
It sounds straightforward.
Until many are 6+ months post-opâŚ
Still stiff.
Still hesitant.
Still unsure if their knee is actually ready.
For most people, the problem isnât that the surgery failed.
Itâs that rehab never prepared them for what they want to return to.âď¸
Rehab is where strength is rebuilt.
Where confidence is earned.
Where trust in your knee is created.
And itâs also where most ACL recoveries quietly fall apart.
Surgery fixes the ligament.
Rehab determines the outcome.
So If youâre feeling stuck, I want to help
đComment "ACL" and I'll send over my free guide on how to crush your recovery
The goal was never just to âwalk without pain.â
It was this.
Trusting the knee at speed.
Landing without hesitation.
Doing what you love without that quiet fear in the back of your mind.
Hereâs what most people donât realize:
Getting cleared isnât the same as being confident & prepared.
âď¸These clients didnât just wait 9â12 months and hope.
âď¸They didn't "give it more time" when they weren't confident in their rehab plan.
â ď¸They took action.
â ď¸They rebuilt strength.
â ď¸They trained for the actual demands of skiing and snowboarding.
All through online coaching.
Confidence on the mountain isnât luck.
Itâs earned in the months before.
If youâre sitting there wondering whether your knee will ever feel ânormalâ again on the slopes...
It can.
But it wonât happen by accident.
đDM me "knee" to start building the strongest knees of your life
Does this sound familiar?đ
1) You work on getting knee range of motion in PT
2) It improves a little
3) Then it goes back to being tight
It's like a constant game of tug-of-war with no end in sightđŠ
It might seem like you'll never get your knee motion back 100%
While ideally, we want to achieve this in the first 2ish months after surgery, I often see many ACLers who are still missing knee motion many months/years down the line.
đ¤ What if I told you the right plan could get you there ?
Dustin felt this way. 5 Months after surgery and still struggling with knee tightness.
We started working together for 2 weeks and have achieved what felt impossible after 5 months.
It's not a miracle.
â ď¸The magic is in getting help that's specific to YOU.
â ď¸Finding the ROOT CAUSE of why
You won't wake up 1 day and magically be better.
I've made a video outlining 3 critical steps for getting range of motion gains that last.
If you're tired of playing tug-of-war,
đComment "ROM" below and I'll send it over đŞ
Most people are told the actual ACL surgery itself is the hard part...
đFollow @acl.rx for daily ACL & knee recovery tips
Once the surgery is done, the rest is supposed to be âjust rehab.â
A few months at a local clinic.
Follow a protocol.
And youâll be back to sports/active lifestyle in 9 months.
It sounds straightforward.
Until many are 6+ months post-opâŚ
Still stiff.
Still hesitant.
Still unsure if their knee is actually ready.
For most people, the problem isnât that the surgery failed.
Itâs that rehab never prepared them for what they want to return to.âď¸
Rehab is where strength is rebuilt.
Where confidence is earned.
Where trust in your knee is created.
And itâs also where most ACL recoveries quietly fall apart.
Surgery fixes the ligament.
Rehab determines the outcome.
So if you're stuck, it's not your fault - But it is your responsibility to get the help you need.
So you really have 2 options:
1) Continue to "give it more time" and hope things will magically change
or
2) Take action and get the help you need.
Most people will settle and continue to scroll - and that's ok
đBut if you refuse to settle for a new normal, DM me "ACL" and let's rewrite your comeback
Swelling is feedback.
Swelling is totally normal early â it's part of healing. But if it's still hanging around past the 3-4 month mark, it's quietly stalling your recovery. AMI. Stuck ROM. Pain feedback loops. The whole cascade.
What's not being measured isn't being managed.
This video shows the sweep test.
â ď¸But there's another way that you can simply measure swelling at home
đComment "SWELLING" and I'll send you my full breakdown of what causes swelling and a full tutorial on how to measure it yourself
Same weights. Same reps. Same knee.
Most ACL rehabs plateau because nobody teaches the programming that actually drives strength.
One more rep. Five more pounds. Move the needle somewhere â every time you train. That's how my client Nick went from crutches to dunking in 7 months.
Swipe through đ the 3 ways to set a PR, the rule that makes them work, and the one thing you can't skip when you're rehabbing a real injury.
đComment "PR" and I'll DM you my full breakdown â free.
More aggressive isn't the answer.
The PT in this clip isn't a bad person â they're doing what a lot of were taught to do when motion gets stuck: push harder. The intent is good.
But here's what actually happens when you force a knee aggressively through pain:
âď¸Your knee fights back â the body tenses (we call this guarding)
âď¸ The joint swells, which reflexively shuts down your quad
âď¸ You lose more motion than you started with
And no â you're not "breaking up scar tissue" by stretching. Soft tissue remodels when you load and lengthen it strategically over time. That happens when the knee isn't constantly irritated.
The knees that get full motion back aren't the ones that got pushed the hardest. They're the ones loaded correctly â just enough force, done frequently throughout the day, consistently.
Boring on camera. Effective in real life.
If you've been spinning your wheels with knee ROM â you're not broken. You just need the right plan.
đComment ROM and I'll send you the free training I put together: how to actually restore knee motion + the common pitfalls that keep people stuck.
Quad weakness after ACL surgery isn't just a weak muscle.
đ§ Itâs neurological.
After surgery, the brain literally changes how it communicates with the quad. Thatâs why so many people struggle to fully âturn it onâ â even months later.
The frustrating part?
You can still walk, squat, and exercise consistently while major weakness is hiding underneath the surface.
Lingering quad weakness usually comes down to 4 main reasons:
đMissing foundational milestones
đPain & swelling inhibition
đCompensation patterns
đIncomplete strength programming
If you donât address the actual root cause, the quad never fully comes back.
Want the full video breakdown?
đComment âSTRENGTHâ and Iâll send it over
Most people only see others success.
Skiing.
Sports.
Hiking.
The âback to normal.â
What they donât see is the part that actually determines the outcome.
The structure.
The uncomfortable work.
The relentless consistency.
đŻThe decision to stop guessing and get the help they need.
â ď¸To choose to action and not just "give it more time" with guidance they aren't confident in.
Every successful ACL recovery you admire has this part in common.
Not more motivation.
Not better luck.
Just better decisions.
Most people never choose this part.
Thatâs why most never get the outcome they want.
đDM me âACLâ if youâre ready to take action and work with our team
This might surprise you...
Many physical therapists and surgeons believe the knee extension machine is harmful for the graft and the knee.âď¸
The truth is...
It is SAFE & EFFECTIVE â ď¸
But this isnt a license to be careless. It has to be used and progressed properly.
đI made a video breaking down the research behind it, and how to use it at different stages of ACL recovery.
đŚľComment "extension" and I'll send the video link