ACL Injury Prevention Exercises Amsterdam

What Is the ACL and Why Does It Matter?

The anterior cruciate ligament (ACL) is one of the four primary ligaments stabilising the knee joint. Running diagonally through the centre of the knee, it controls forward displacement of the tibia relative to the femur and — critically — governs rotational stability during the unpredictable, multi-directional movements that sport constantly demands. When it fails, it rarely goes quietly: the characteristic “pop,” immediate swelling, and sudden instability are hard to miss.

What makes ACL injury so consequential is not the moment of injury but everything that follows. A complete tear typically requires surgical reconstruction and nine to twelve months of rehabilitation before a confident return to sport — if that return happens at all. Research consistently shows that re-injury rates remain elevated for years, and that early-onset knee osteoarthritis is a real long-term risk after ACL injury. Prevention, therefore, is not a luxury reserved for elite athletes. It is the most efficient intervention available to anyone who runs, jumps, pivots, or simply wants their knees to last.

Who Is at Risk — and Why

ACL injuries cluster around sports involving rapid direction changes, deceleration, jumping, and landing: football, basketball, volleyball, skiing, korfball, and martial arts are the most common contexts in the Netherlands. But the risk profile is more nuanced than sport alone.

Female athletes face a statistically higher ACL injury rate — estimates in the literature range from two to eight times that of male counterparts in the same sports. Several factors contribute: differences in the Q-angle (the alignment between hip and knee), a narrower intercondylar notch, lower baseline hamstring-to-quadriceps strength ratios, and hormonal fluctuations across the menstrual cycle that transiently affect ligament laxity. None of these factors are destiny — all of them are addressable with targeted training.

Beyond sex, other modifiable risk factors include poor single-leg landing mechanics (knee valgus, also known as “knee cave”), relative hamstring weakness, limited hip abductor strength, inadequate neuromuscular control during fatigue, and a history of previous lower-limb injury. The last point matters: an ankle sprain that was never fully rehabilitated, for instance, can quietly alter how load travels through the entire kinetic chain — and the knee often pays the price.

For Amsterdam’s active population — cycling year-round, playing on artificial pitches, skiing in the Alps each winter — understanding your personal risk profile before an incident occurs is a practical, high-value step. See also our broader look at 5 Common Sports Injuries in Amsterdam and How to Prevent Them.

How We Find and Address the Root

At Alter, our starting point is a simple principle: symptoms are outputs of a system that has run out of better options. An ACL tear is rarely just bad luck. It is the endpoint of a movement pattern that, under sufficient load and speed, could no longer protect the joint. The question worth asking before injury — and the question we ask during a movement screening — is: where is the pattern breaking down, and why?

A structured assessment typically examines single-leg squat mechanics, landing strategy, hip and ankle mobility, hamstring and glute strength, and how the nervous system organises load under fatigue. We look for the primary restriction — a missing movement, a lost sensory input, a stuck motor pattern — rather than treating each finding in isolation. When we identify it and apply a targeted input (a specific loading exercise, hands-on joint work, or occasionally fine needles to down-regulate protective tension in overloaded tissue), we expect to see an immediate, measurable change: better knee tracking, a smoother landing, a more symmetric squat. That measurable shift tells us we are working on the right thing.

The specific tool is chosen by that reasoning. Sometimes it is a loading protocol; sometimes it is restoring mobility at the hip or ankle so the knee is no longer asked to compensate; sometimes it is nervous-system work to help a body that has been braced against injury for months finally move freely again. The goal is always the same: help the system reorganise around better mechanics, so the ACL is never the structure doing the work it was not designed to do.

The Most Effective Prevention Exercises

The exercises below are drawn from the most robust prevention programmes in the literature — including the FIFA 11+ protocol and the work of researchers like Roald Bahr and Kristian Thorborg. They work best when performed consistently, in the right sequence, and with attention to quality over quantity.

1. Nordic Hamstring Curl

Strong, fatigue-resistant hamstrings act as dynamic brakes on forward tibial translation — the exact mechanism the ACL is also managing. The Nordic hamstring curl is the single most evidence-supported exercise for reducing both ACL and hamstring injury risk in field-sport athletes. Kneel on a padded surface, anchor your feet, and lower your torso toward the floor as slowly as possible (aim for three to four seconds), catching yourself with your hands and pushing back to the start. Begin with two sets of five repetitions and progress gradually to three sets of eight over six to eight weeks. Twice weekly is sufficient for a meaningful protective effect.

2. Single-Leg Squat

This exercise simultaneously reveals and corrects the hip-knee alignment issues most closely associated with ACL risk. Stand on one leg, lower slowly for three seconds to approximately 60–70° of knee flexion, and drive back up. The key cue: keep your knee tracking over your second toe throughout. Inward collapse (valgus) signals insufficient hip abductor and external rotator control. If that is your pattern, prioritise glute strengthening before adding load. Three sets of eight repetitions per side, three times per week.

3. Lateral Band Walk

Place a resistance band just above your knees, adopt a quarter-squat position, and take fifteen controlled steps sideways in each direction. This directly activates the gluteus medius — a muscle that, when underperforming, allows the knee to drift inward under load. Perform two to three sets. Resistance should be enough to feel the work clearly without the pelvis tilting or the trunk lurching.

4. Jump Landing Technique

The majority of non-contact ACL tears occur during landing, not take-off. Practicing good landing mechanics is therefore one of the highest-yield things an active person can do. Step or jump from a low box and focus on landing with the feet hip-width apart, knees flexed to at least 30° on contact, hips loaded, and the trunk slightly forward — a “soft” landing that distributes force across the hip, knee, and ankle rather than dumping it into the knee alone. If your knees cave inward on landing, stop, reset, and repeat with a conscious correction. Quality matters more than volume here.

5. Hip Thrust

Lie on your back with knees bent and feet flat on the floor. Drive your hips toward the ceiling, squeeze your glutes firmly at the top, hold for one second, and lower slowly. This builds the posterior chain strength — particularly glute max — that keeps the knee in proper alignment across all athletic movements: running, cutting, landing, and changing direction. Three sets of twelve to fifteen repetitions. As this becomes easy, progress to a single-leg variation or add a loaded barbell.

A Note on Programming

These five exercises work best as a warm-up sequence before training sessions rather than a standalone programme bolted on at the end when fatigue has already set in. Ten to fifteen minutes, two to three times per week, is an evidence-consistent target. The protective effect of neuromuscular training programmes like these is well-documented — but only with adherence. Sporadic effort produces sporadic results.

Self-Care and Everyday Habits That Reinforce Knee Health

Structured exercise is only part of the picture. Several everyday habits meaningfully reduce the background risk:

Warm up deliberately. A five-minute dynamic warm-up (leg swings, hip circles, walking lunges) prepares the neuromuscular system for reactive demands. Cold, unprepared tissue is less tolerant of sudden loading.
Manage fatigue. A disproportionate number of ACL injuries occur in the final third of a match or training session. Conditioning that maintains motor control under fatigue is protective — as is knowing when to stop.
Address your full kinetic chain. The knee is sandwiched between the hip and the ankle. Stiffness or weakness at either end forces the knee to absorb what it cannot distribute. If you cycle extensively in Amsterdam, read our guide to preventing common cycling injuries — many of the hip and knee patterns that drive cycling discomfort also increase ACL risk in multisport athletes.
Recover properly. Sleep, nutrition, and load management are not soft variables. Inadequate recovery impairs proprioception and neuromuscular response — exactly the capacities that protect the ACL under pressure.

When to Come In

A self-directed exercise programme is a reasonable starting point for many active people. But some situations call for a proper assessment before progressing independently:

You have had a previous knee injury — even a minor one — and are returning to pivoting or jumping sport.
Your knee consistently collapses inward during single-leg loading and you are not improving despite focused effort.
You have experienced a recent ankle sprain, hip problem, or back injury that changed how you move.
You are returning to sport after any period of significant inactivity — runners returning to training and team-sport athletes coming back from an off-season both benefit from a movement check-in.
You have a family history of ligament laxity, or you identify with the female-athlete risk profile and want to understand your personal picture.
Something in your knee does not feel quite right — even without a clear injury event.

An assessment at Alter is a 25- or 55-minute physiotherapy session and produces a clear, prioritised plan — not a generic exercise sheet, but a specific map of what your system needs and in what order.

Frequently Asked Questions

Can these exercises prevent an ACL tear completely?

No exercise programme eliminates risk entirely — sport involves inherent unpredictability. What the evidence does show is that well-designed neuromuscular prevention programmes can meaningfully reduce ACL injury incidence in at-risk populations. The goal is to make your body more resilient and better prepared, not to offer a guarantee.

I have already had an ACL reconstruction. Are these exercises still relevant?

Yes — and arguably more so. Re-injury risk is highest in the first two years after return to sport. Ongoing neuromuscular training, particularly single-leg work and landing mechanics, remains important well beyond the formal rehabilitation period. If you are post-reconstruction and have questions about your current programme, an assessment can help clarify where you stand.

How long before I see a protective effect from the exercises?

Neuromuscular adaptations begin within a few weeks of consistent training, but meaningful strength and motor-control changes typically take eight to twelve weeks of regular practice. Starting before the season — not during it — gives the programme time to work.

Do I need any equipment?

For the exercises above, a resistance band, a low box or step, and a padded surface for Nordic curls (or a partner to hold your ankles) are sufficient. The single-leg squat and hip thrust require nothing at all to begin.

What if I have knee pain right now?

These exercises are designed for prevention in people who are currently pain-free or managing well. If you have active knee pain, swelling, instability, or locking, please seek an assessment before beginning any loading programme. Pain is information the system is sending — it is worth understanding what it is trying to say before working through it.

Protecting your ACL is not about fear of injury — it is about building a body that moves well, absorbs load efficiently, and keeps performing across the years and decades ahead. Heal the root. Not just the pain.

If you would like a personalised movement screening or want to discuss your risk profile with one of our practitioners, book a session with Hidekazu — or view availability and book directly online.

Written by Hidekazu Kuwabara, Registered Physiotherapist (BIG-registered, Amsterdam)

Hidekazu Kuwabara is a BIG-registered physiotherapist. He has also completed the International Toyohari Training Program (Japanese meridian therapy) of the European Branch of the Toyohari Association (EBTA), and brings a background in Japanese acupuncture to how he understands the body.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before making decisions about your health or treatment.