New Australian Study: Supported Training Slashes ACL Knee Risks in Women Footballers

The Growing ACL Crisis in Women's Australian Football

Australian football, or Aussie rules, has seen explosive growth in women's participation, surging by 790 percent over the past decade. This boom is fantastic for the sport, but it has coincided with a troubling rise in anterior cruciate ligament (ACL) injuries, particularly among adolescent girls and young women. Rates have climbed up to six percent annually in recent years, with females facing six to nine times the risk compared to males in elite leagues like the AFL Women's (AFLW). These non-contact tears sideline players for 9-12 months, often derailing careers and leading to long-term issues like osteoarthritis.

The problem is acute in community levels, where under-resourced clubs struggle. In Victoria alone, serious knee injuries are rampant, prompting urgent calls for scalable solutions. This epidemic isn't unique to Australia—global women's soccer sees similar patterns—but our high reconstruction rates (90 percent of cases) make it a national priority.

La Trobe University's Groundbreaking Study

Researchers from La Trobe University's Sport and Exercise Medical Research Centre (LASEM) have delivered the first randomized controlled trial specifically for women's Australian football. Published in the British Journal of Sports Medicine, the study tracked nearly 2,500 players across 165 under-16, under-18, and senior teams in metropolitan and regional Victoria from 2021 to 2022.

Led by Dr. Brooke Patterson, a physiotherapist and former AFLW player, the trial tested the Prep-to-Play program with a twist: hands-on support versus online-only delivery. Teams getting physiotherapist-led workshops, two follow-ups, and resources showed nearly four times higher adherence. Crucially, every 10 percent increase in program use slashed lower- and upper-limb injury rates—including ACL ruptures and serious knees—by up to seven percent. This is the second-largest sports injury prevention trial globally.

Unpacking the Prep-to-Play Program

Developed by La Trobe in partnership with the Australian Football League (AFL), Prep-to-Play integrates seamlessly into training: eight dynamic warm-up activities for neuromuscular control, three contact-focused skills like tackling, and three strength exercises targeting hips, knees, and core. Sessions last 15-20 minutes, making it practical for community clubs.

The program's evidence base draws from global neuromuscular training (NMT) successes, adapted for footy's high-impact demands. Free resources, including videos, are available at play.afl. Early adoption in AFLW has already lowered rates to a historic low of 2.51 per 1,000 player hours.

Study Design: A Rigorous Cluster Randomized Trial

This stepped-wedge cluster randomized controlled trial divided teams into intervention (supported workshops) and control (online modules). Over 50 workshops educated coaches, players, admins, and parents on technique and buy-in. Adherence was measured via logs and surveys; injuries tracked prospectively.

Results were compelling: supported groups averaged higher fidelity, translating to measurable risk drops. While ACL-specific numbers weren't isolated due to rarity, the dose-response effect (more use = fewer injuries) strongly implicates protection against these tears. Funded by NHMRC and AFL, it aligns with 2025 IOC consensus on female athlete prevention.

Why Women Face Higher ACL Risks: Biomechanics and Beyond

Females' wider pelvises create a larger quadriceps angle (Q-angle), stressing the ACL during pivots and landings common in footy. Smaller, less robust ligaments, combined with estrogen/relaxin fluctuations loosening tissues mid-cycle, amplify vulnerability. Youth girls often lack boys' contact exposure, leading to neuromuscular gaps like poor hip control.

In Australia, less structured physical development exacerbates this. NMT addresses these via plyometrics, balance, and strength, retraining dynamic stability.

Photo by Nihar Reddy Jangam on Unsplash

Global Evidence Backs NMT Programs

• Meta-analyses show 50-60 percent ACL risk reduction in female athletes across soccer, handball, basketball.
• FIFA 11+ cuts injuries 30-50 percent; similar for PEP, Sportsmetrics.
• Plyometrics alone reduce risk 60 percent per 1,000 exposure hours.

La Trobe's innovation: proving support boosts real-world uptake, where standalone programs falter at 20-30 percent adherence.

The Steep Economic and Personal Costs

One ACL reconstruction averages $30,000 AUD direct costs; lifetime burden hits $100,000+ with osteoarthritis, lost wages. In amateur footy, female injuries cost millions yearly in healthcare and productivity. For players, psychological toll includes depression, fear of reinjury (20-30 percent rate).

Scaling Prep-to-Play could save billions, per modeling, while sustaining the sport's growth.

Barriers to Adoption and How to Overcome Them

Time-crunched coaches cite 20 percent uptake without nudges. Solution: physio-led workshops build skills/confidence. Parent/player education fosters culture. AFL's policy integration is key.

Challenges: regional access, volunteer burnout. Digital hybrids with telehealth show promise.

Voices from the Field: Experts and Players Speak

Dr. Patterson: “Hands-on training equips coaches—proper implementation drives results.” Prof. Crossley: “Embed annually per IOC guidelines.” AFL CMO Dr. Makdissi: “Safer environments for growth.” Player Kel Rowe: “Empowered our club culture.”

Future Directions: National Rollout and Research

AFL plans wider rollout; uni collaborations like La Trobe's expand evidence. Track menstrual phases, AI biomechanics screening next. Goal: halve ACL rates by 2030.

For unis: sports science programs vital; jobs in research/clinical roles booming. Explore research opportunities at institutions driving change.

Photo by Nihar Reddy Jangam on Unsplash

Practical Steps for Coaches, Players, and Parents

• Start every session with Prep-to-Play—download at play.afl.
• Seek physio support; request workshops via prep2play@latrobe.edu.au.
• Monitor landing mechanics; strength train hips/glutes twice weekly.
• Parents: advocate club-wide adoption.
• Players: self-screen via apps; rest fatigued.

Read the full study: BJSM. With commitment, we can protect the next generation.