Are Published ACL Rehab Programs Actually Usable? Or Are We Building Athletes on Guesswork?
Let’s not dance around this.
ACL rehab is one of the most studied areas in sports medicine…and yet one of the most poorly executed in practice.
Why?
Because most of what we call “evidence-based” rehab isn’t actually usable.
The Reality: ACL Outcomes Are Still Not Good Enough
We are seeing:
Increasing ACL re-rupture rates worldwide
~17.5% reinjury after reconstruction (conservative estimate)
Only 65% of athletes return to pre-injury sport
Only 55% return to the same level
Reinjury rates up to 25% in some groups
And we still have people arguing about whether rehab matters.
Let’s be clear: Rehabilitation is not an accessory to surgery—it is the outcome.
In many cases, the surgery fails because the rehab fails.
The Big Problem: The Research Isn’t Actually Transferable
A 2025 scoping review (Nutarelli et al.) looked at this directly.
296 studies
22,564 participants
185 randomized controlled trials
That’s a massive body of literature.
And here’s what they found:
Not a single study provided enough detail to be fully reproduced in practice.
Not one.
And guess what, when I built my course, I had to do an interpretive dance to glean anything useful.
Let That Land…
We are asking clinicians and coaches to:
follow protocols
trust the research
“apply evidence-based practice”
…when the interventions themselves are not described well enough to actually implement.
That’s not a small issue. That’s a failure.
28 Domains… and Still No Clarity
The researchers broke ACL rehab down into 28 domains, including:
Weight-bearing progressions
ROM restoration
Strength development
Neuromuscular control
Return-to-running
Return-to-sport criteria
And still:
No study covered all domains
Some studies reported only one domain
Overall reproducibility score: 6.7 / 12 (unclear)
This is what clinicians are building programs from.
Here’s the Real Issue (And It’s Not What You Think)
Most people think the problem is:
“We need better exercises.”
That’s not the problem.
The problem is:
We don’t describe how the exercises are performed.
And that matters more than the exercise itself.
Exercise Selection ≠ Adaptation
You don’t get adaptation from:
squats
lunges
plyometrics
You get adaptation from:
how they’re loaded
how they’re executed
what the intent is
how they’re progressed
what the athlete can tolerate
The paper exposes this clearly.
Even in muscle strengthening (50% of studies):
No clear sets
No reps
No loading parameters
No progression rules
Instead, we get:
“progressive strengthening”
“sport-specific training”
“advanced exercises”
“Neuromuscular training”
That’s not programming, nor is it coaching the human in front of you.
That’s noise.
Time-Based Rehab: Still Dominating (And Still Wrong)
Here’s another major issue:
87.5% of studies used time-based progression
Only 12.5% used criteria-based progression
So, we’re still doing:
Week 6 → run
Month 6 → return to sport
Instead of asking:
Can the athlete produce force?
Can they absorb force?
Do they control frontal plane motion?
Are they psychologically ready?
The paper is clear:
Progression is largely based on the calendar, not the athlete.
“Progress as Tolerated” Is Not a Strategy
When you look at return-to-running:
Median time ≈ 78 days post-op
Only ~6% used criteria-based decisions
And when criteria were used?
They looked like this:
“progress as tolerated”
“after clinical evaluation”
“when pain-free”
Or worse:
trial-and-error treadmill running until symptoms appear
That’s not decision-making.
That’s hoping. That’s me playing pickleball – trust me, I’m no good.
This Is Why Outcomes Are All Over the Map
We have:
inconsistent programming
unclear progression
vague criteria
no reproducibility
…and then we act surprised when outcomes vary wildly.
The truth is:
We don’t actually know what works—because we don’t clearly define what was done.
The Coach Bott Reality Check
This is where I’ll push back a bit.
The issue is not just “poor reporting.”
It’s deeper than that.
The issue is that:
Most research does not capture the variables that actually drive adaptation.
Those variables are:
movement competency
intent
velocity
force application
positional control
fatigue management
progression logic
These are coaching variables.
And they are largely missing from the literature.
This is exactly why I built my ACL Rehab From A to Z course.
Because what’s missing is not:
more protocols
more exercises
more timelines
What’s missing is:
1. Clear Progression Logic
Not “week 8 → do this”
But: “earn the right to progress”
2. Defined Movement Standards
Not “do a squat”
But: what does a valid squat look like post-ACL? Why should we start with a vertical shin?
3. Load With Intent
Not just load for the sake of load
But load that drives specific adaptation
4. Criteria-Based Advancement
Strength
Control
Symmetry
Capacity—not time
5. Coaching That Shapes Adaptation
Because the way an athlete performs an exercise is the intervention
This Is the Part Most People Miss
Rehab is not:
a checklist of exercises
It is: a process of restoring capacity under constraint
And if you don’t define:
how load is applied
how movement is controlled
how progression is earned
…then you’re not running rehab.
You’re running exposure.
What Needs to Change (And the Paper Agrees)
The authors call for:
detailed intervention reporting
standardized frameworks
clearer progression criteria
better transparency
That’s a start.
But from a coaching lens, I’d go further:
We need to stop pretending that vague protocols are enough.
Bottom Line
Here’s the reality:
The research base is large
The reporting quality is poor
The applicability is limited
And because of that:
Clinicians are left guessing how to dose and progress rehab.
That should not be acceptable in 2026.
Final Thought
If you take one thing from this:
The exercise doesn’t drive the adaptation.
The way it is performed does.
Until research reflects that…
The best rehab will continue to come from:
skilled coaches & kinesiologists
thoughtful clinicians
and systems built on principles—not templates
For more help on this check out my course ACL Rehab Exercise Prescription from A-Z hosted on Strength Coach Network. This in-depth course is designed to provide strength and conditioning coaches, athletic trainers, and rehab professionals with a step-by-step framework for designing ACL rehab programs that actually work.
From early-stage recovery to full return-to-play, you’ll learn how to bridge the gap between rehab and performance. Learn with:
Expert-Led Lectures – Gain insights from a top professional in ACL rehabilitation and strength training.
PDF Handouts & Guides – Practical takeaways to reinforce learning and apply concepts immediately.
Research-Based Questionnaires & Screens – Identify risks and track progress with validated tools.
Exercise Demonstration Videos – Step-by-step instructions on key movements to ensure proper execution and effectiveness.
Click here to learn more about the course. And yes, it comes with CEUs to the NSCA and CSCCa.
