Strength Setbacks After Youth Knee Injuries

Knee injuries are common in young athletes, but did you know the effects can last much longer than expected?

A recent study followed teenagers with sport-related knee injuries over a 2 year period. They found that even after rehab, the injured leg often stays weaker than the uninjured one, for up to 24 months.

The study also found…

  • Big early strength loss: Thigh strength in the injured leg was significantly reduced shortly after injury.
  • Recovery is slow: While there was some improvement over time, strength deficits remained even two years later.
  • All injuries affected strength: The type of knee injury didn’t matter; weakness was still present across the board.

Why Does This Matter?
Just because pain is gone doesn’t mean strength is back. If the injured leg doesn’t catch up, the imbalance can increase the risk of another injury. This is especially important for active teens returning to sport.

How Can Our Physiotherapists Help?
At our clinic, we offer:

  • Regular strength testing to track progress
  • Individualised exercise plans targeting both quads and hamstrings
  • Guidance on safe return to sport, based on strength, not just time

Young athletes need more than rest and a few weeks of rehab. Strength recovery takes time and needs to be measured and supported properly. If your teen has had a knee injury, we’re here to help them get back on track safely and confidently.


Don’t let your child risk their long-term health.

Contact us at [email protected] or call 9997 4970 to book an appointment with us today or learn more about our youth rehab programs
Source: Losciale, J. M. (2024). Strength setbacks: The impact of youth sport-related knee joint injuries on thigh muscle strength – a 24-month prospective cohort study. Physio Network. https://www.physio-network.com/research-reviews/knee/strength-setbacks-the-impact-of-youth-sport-related-knee-joint-injuries-on-thigh-muscle-strength-a-24-month-prospective-cohort-study/