An ACL injury in a young athlete can feel like a devastating setback — not just physically, but emotionally and socially too. For a teenager who lives and breathes their sport, being sidelined for months can be incredibly difficult. If your child has recently been diagnosed with an ACL tear, or you are worried about their risk, you are right to want to understand more.
ACL injuries in young athletes are becoming increasingly common, and the reasons behind this are well understood. The earlier the risk is identified and managed, the better the outcomes tend to be.
Why Are Young Athletes at Greater Risk?
Several factors unique to adolescent athletes contribute to their elevated risk of ACL injury.
1. Rapid Growth and Musculoskeletal Immaturity
During adolescence, bones grow rapidly while muscles, tendons, and ligaments take time to catch up. This mismatch can temporarily reduce joint stability and neuromuscular control, leaving the knee more vulnerable during high-demand sporting activities.
2. Hormonal Influences
Research has consistently shown that female athletes are significantly more likely to sustain an ACL injury than their male counterparts — estimates suggest two to eight times the risk in comparable sports. Hormonal differences, particularly the influence of oestrogen on ligament laxity, are considered a contributing factor. Anatomical differences in pelvis width and lower limb alignment also play a role.
3. Underdeveloped Neuromuscular Control
Young athletes are still developing the neuromuscular coordination that allows the body to respond efficiently to sudden changes in load or direction. Immature movement patterns — such as landing with straight knees or collapsing inward at the hip and knee — significantly increase ACL stress during sport.
4. Early Sports Specialisation
There is growing evidence that early single-sport specialisation increases injury risk in young athletes. Year-round participation in one sport without adequate recovery or cross-training limits the development of varied movement skills and increases cumulative load on the same structures repeatedly.
5. High Training and Competition Loads
As young athletes progress through representative and elite pathways, training volumes and competition frequency increase significantly. Without appropriate load management, the risk of both acute and overuse injuries — including ACL tears — rises considerably.
The Emotional Impact Should Not Be Overlooked
An ACL injury affects far more than just the knee. For many young athletes, sport is central to their identity, social connections, and mental wellbeing. The psychological impact of an ACL injury — including fear of re-injury, loss of confidence, and emotional distress — is a recognised and important part of recovery that deserves as much attention as the physical rehabilitation.
What Can Be Done to Reduce the Risk?
ACL injury prevention in young athletes is a well-researched area. Evidence-based prevention strategies include:
- Structured warm-up programs incorporating neuromuscular training
- Landing and jumping technique education
- Hip and glute strengthening
- Hamstring and quadriceps strength development
- Load monitoring and appropriate recovery periods
Ahmad at Aret Chiropractic has a specialist focus in lower limb rehabilitation for young athletes, with a primary interest in ACL injury prevention, rehabilitation and recovery. Early intervention — whether for prevention or following injury — makes a significant difference to long-term outcomes.
If you are concerned about your child’s knee health or ACL injury risk, call us on (02) 8018 8883 to speak with Ahmad at Aret Chiropractic in North Ryde, or book online for a consultation.
References
Hewett, T. E., et al. (2005). Biomechanical measures of neuromuscular control and valgus loading of the knee predict ACL injury risk in female athletes. American Journal of Sports Medicine, 33(4), 492–501.
Myer, G. D., et al. (2015). The incidence and potential pathomechanics of patellofemoral pain in female athletes. Clinical Biomechanics, 25(7), 700–707.
Prodromos, C. C., et al. (2007). A meta-analysis of the incidence of anterior cruciate ligament tears as a function of gender, sport, and a knee injury reduction regimen. Arthroscopy, 23(12), 1320–1325.
Renstrom, P., et al. (2008). Non-contact ACL injuries in female athletes: an International Olympic Committee current concepts statement. British Journal of Sports Medicine, 42(6), 394–412.
Wall, E. J., et al. (2016). Pediatric ACL injuries: evaluation and management. Journal of the American Academy of Orthopaedic Surgeons, 24(3), 150–159.