Do I Need Surgery for an ACL Tear?
Category: ACL Rehabilitation | Reading time: ~5 min
Ruptured your ACL and been told you need surgery? It might not be that simple. The decision between surgical and non-surgical management is one of the most nuanced in sports medicine — and the answer depends on you specifically, not a protocol.
The Evidence Has Shifted
For decades, ACL reconstruction was the default recommendation for anyone who wanted to stay active. That has changed. A growing body of research — including long-term outcome studies and a 2024 validated treatment algorithm — shows that a significant proportion of patients do well without surgery, provided they meet certain criteria and complete structured rehabilitation.
The KANON trial, one of the largest randomised studies on the topic, found no significant difference in outcomes at 5 years between early ACL reconstruction and structured rehabilitation alone in a general adult population.
Who Tends to Do Well Without Surgery?
Surgical vs Non-Surgical: Decision Factors
NON-SURGICAL CANDIDATES
✓ Low functional instability
✓ Older or recreational athletes
✓ No significant meniscus injury
✓ Strong neuromuscular control
✓ Low pivot-demand sport
✓ Willing to complete full rehab
✓ Passes “coper” functional testing
SURGICAL CANDIDATES
✓ High functional instability
✓ Young pivot-sport athlete
✓ Associated meniscus/cartilage injury
✓ Significant giving-way episodes
✓ High-demand sport goals
✓ Failed conservative management
✓ Multiligament involvement
What About Young Athletes?
For skeletally immature athletes (open growth plates), the surgical decision is more complex. Drilling through growth plates carries risk of growth disturbance. However, ongoing instability in a young athlete also carries significant risk — particularly secondary meniscal damage with repeated giving-way episodes.
For young athletes, the decision typically weighs:
- Skeletal maturity (bone age, not chronological age)
- Sport demands and competition level
- Functional instability on testing
- Associated injuries (meniscus, cartilage)
This is a conversation to have with your surgeon and physio together — and it should be informed by objective testing data.
Prehab Is Never Wasted
Whether you end up having surgery or not, early rehabilitation is never wasted. Research consistently shows that stronger quadriceps and better movement patterns before surgery are associated with better outcomes after it. Starting rehab immediately after injury — regardless of the surgical decision — is the right call.
How We Help at Movement Rx
We use VALD ForceDecks and Dynamo testing to give you objective data: strength, symmetry, functional hop scores, and force plate metrics. That data helps inform your conversation with your surgeon — giving you something concrete rather than just going on symptoms alone.
We see patients from Kippa-Ring, Redcliffe, Newport, Scarborough, Clontarf, North Lakes, and across Moreton Bay.
Learn more about ACL Rehabilitation at Movement Rx or book an assessment.