EP 2: ACL Injury: Surgical vs Non-Surgical Management

An ACL injury is one of the few injuries where people are asked to make a permanent decision within days — swollen knee, unclear scans, season pressure… and somehow you’re expected to already know if you want surgery. 

In this episode of the RX Physiotherapy Podcast, Trent Cooksley unpack what surgery actually does, and what it doesn’t. 

Because here’s the truth:
Surgery restores anatomy.
Rehab restores capacity. 

We explore the research behind immediate vs delayed reconstruction, why rehab quality matters more than surgical timing, and how strength, confidence, and knee stability should guide decision-making — not fear or urgency. 

This conversation isn’t about choosing sides. It’s about slowing the process down, understanding your options, and making an informed decision based on how your knee responds to structured rehab. 

If you or someone you know is navigating an ACL injury, this episode offers clarity grounded in evidence — not pressure. 

Disclaimer: Before making any health changes, consult with a healthcare professional.

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Transcript

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Welcome to the RX Physiotherapy Podcast, your go-to destination for all things physio, rehab, health and wellness. I'm April Patterson and tr, and each week we will dive deep into fascinating topics within the health world. From physiotherapy to nutrition and beyond. We cover it all. So sit back, relax. And enjoy the journey as we explore the exciting world of health and wellness. Let's get started. And a C lter is one of the few injuries where people are asked to make permanent decisions within days, swollen, knee, uncertain scan, and season pressure. And yet, somehow the expectation is that you should already know whether or not you want surgery. And here's the problem with that. There's no evidence that rushing this decision improves outcomes. In fact, the opposite is true. And in this episode, it's about slowing the process down and understanding what surgery and rehab actually do. And just as importantly, what they don't do. G gday Trent Cooksley here, uh, bring you. Another episode about a CO injuries, and we're taking a little deeper dive into the surgical versus non-surgical management of this particular injury. So what a CO surgery actually achieves is. An A CO reconstruction replaces the ligament itself with a graft biomechanically that graft restores passive anterior, and rotational stability. But here's the key clarification that often that's often missing. Surgery doesn't restore quad strength, neuromuscular control, movement, quality, and confidence under load. Now, multiple long-term outcome studies show that function follows rehab quality, not surgical timing. This was clearly demonstrated in a landmark CVIS review. Which showed persistent strength deficits years after reconstruction if the rehab itself was inadequate or poor quality. Now, this kind of highlights that surgery changes the anatomy of the knee, but rehab changes the capacity of the knee. Now, in 2010, Rebell and colleagues published a study in the New England Journal of Medicine, which fundamentally shifted ACL management. Touched on this a little bit. In the first podcast that I did over acls. They compared immediate ACL reconstruction to structured rehab with the optional delay of surgery and with follow up reviews that two years outcomes were outcomes used in the study were identical and the same for at five years. The outcomes were still identical. And critically, about 50% of the patients that did undertake the study never actually went on for surgery at all. This wasn't undertreatment, uh, this was rehab used as a decision making tool. The follow-up imaging also showed no increased joint damage in the delayed group either. So this study kind of forced clinicians to ask new questions. Of, for example, who actually needs surgery and who doesn't. Now, what kind of rehab first, um, approach means it's not avoiding surgery. It's kind of using rehab to stress. Test the knee. Work by Eastman, Grham, and Berg consistently show that, uh, early quadricep recovery predicts long-term knee function. Regardless of whether surgery is performed during rehab, um, we're asked, does the knee swell after loading? Um, does it feel unstable? Does strength improve sym symmetrically? And does confidence return if the knees tolerating? Progressive load surgery may not add value? If it doesn't, surgery becomes a more informed choice. So who is more likely to need surgery? Um, the literature is clear on patterns. Athletes more likely to require reconstruction include high level pivoting sports sport athletes. Those with, uh, repeated giving away episodes, uh, those unable to regain quad strength. Those who persistently kind of have that infusion within the knee despite rehab. Research by Grendon, uh, colleagues demonstrate that athletes returning to elite pivoting sports without sufficient strengths face dramatic higher failure rates. Now, this isn't about toughness. It's all about mechanical demands of the particular sport the athlete is returning. Uh, one of the big misconceptions is that, um, surgery prevents arthritis long-term cohort. Studies by lo Mender and Von Port showed that osteoarthritis rates are high regardless of surgical status, and later work by Crosley reinforce that surgery does not guarantee better long-term knee health. Um, systems and function vary widely. Uh, and rehab quality remains a major determinant. So questions become which path best prepares the need for decades of load. Um, this is where the ACL approach that we kind of touched on kind of comes in. So, the me, Melbourne, ACL Rehabilitation Guide 2.0 emphasizes early rehab, uh, delayed decision making. Strength benchmarks before surgical consideration. This model exists because outcomes improve when the swelling is D is controlled. The strength in the knee returns and athletes regain their the trust within the knee. Uh, surgery when cho, when chosen, performs better after preparation. So let's learn this clearly. Surgery is not failure. Rehab is not avoidance. The mistake isn't choosing surgery or not choosing it. The mistake is deciding before rehab gives you the answer. Now, in the next episode, we're gonna unpack why a CO injuries happen in the first place and why re-injury risk remains high even after, you know, a successful rehab. You know, if you. Have learned something from today. I'm very, very glad. I highly recommend, uh, taking a little look into the bits of research that I included in today's, uh, podcast and very interesting reads. But as always, I'll catch you in the next one.