Knee pain is one of the leading reasons young footballers miss training and games. Some causes are simply part of growing up and resolve with time and the right management; others need prompt assessment to avoid longer-term problems. Knowing which is which makes a real difference to how quickly your child gets back on the field.
Growth-related knee pain
Osgood-Schlatter disease is one of the most common causes of knee pain in active, growing teenagers — pain and a tender bump just below the kneecap, caused by repeated pulling of the patellar tendon on the growth plate at the top of the shinbone. It's very common in football due to the repetitive running, jumping and kicking involved, and while it can be uncomfortable, it's highly treatable and typically resolves as the growth plate matures. (Read more in our dedicated article on Osgood-Schlatter disease.)
Ligament injuries
The knee relies on several ligaments for stability, and football's combination of contact, twisting and rapid direction changes puts them at risk:
- ACL (anterior cruciate ligament) — often injured through a non-contact twisting movement, such as landing awkwardly or changing direction suddenly; a significant injury that requires thorough assessment
- MCL (medial collateral ligament) — commonly injured from a direct blow to the outside of the knee, pushing it inward
- Both can range from mild sprains to complete tears, and the appropriate treatment path depends heavily on an accurate diagnosis
Meniscal injuries
The meniscus (the knee's shock-absorbing cartilage) can be torn through twisting movements, particularly when the foot is planted and the body rotates — a common mechanism in football. Symptoms include pain, swelling, and sometimes a sensation of the knee catching or locking.
Patellofemoral pain (kneecap pain)
Very common in adolescent athletes, this presents as an ache around or behind the kneecap, often worse with running, jumping, squatting or after prolonged sitting. It's frequently linked to how the muscles around the hip and knee are working together, rather than any structural damage — which is good news, as it generally responds well to a targeted strengthening program.
When to seek assessment
Any knee injury involving a "pop" at the time of injury, immediate swelling, an inability to bear weight, or a knee that feels unstable or gives way should be assessed promptly. Persistent or recurring pain, even without a specific injury moment, is also worth having checked.
How physiotherapy helps
An accurate diagnosis is the essential first step — distinguishing growth-related pain from ligament or meniscal injury changes the entire treatment approach. From there, your physiotherapist will build a program addressing the specific cause, whether that's load management and strengthening for growth-related pain, or a structured rehabilitation pathway for a ligament or meniscal injury, with the goal of a safe, confident return to football.
If your young footballer has ongoing or concerning knee pain, book an assessment with our paediatric and sports physiotherapy team in the Sutherland Shire.
Written by Aaron Babb, MAppSc Physiotherapy — Founder & Director, Aevum Health & Physiotherapy.