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Medical research

Distal-to-Proximal Progression of Apophyseal Injuries in Male Youth Academy Footballers

Strategic Insights

— 1 min read

Male youth academy footballers are susceptible to apophyseal injuries, which can have lasting effects on their health and performance. A recent study published in the British Journal of Sports Medicine investigated the incidence, severity, and burden of apophyseal injuries among U9-U21 academy football players over two seasons. The researchers found that apophyseal injuries exhibit a distal-to-proximal progression with age, with the highest injury burden observed at the hip/groin and knee regions and in the U12-U16 group.

Key Takeaways:

  • The study analyzed data from 16,024 player-seasons and identified 603 apophyseal injuries, which constituted 10.4% of all reported injuries.
  • Apophyseal injuries were most frequent in the ankle/foot among younger players (U9, U10, and U11), followed by the knee (U12) and hip/groin in older players (U15, U16, and U18).
  • The injury burden was higher in the hip/groin (3.5) and knee (3.4) compared to the ankle/foot (2.2) and pelvis/sacrum (1.4).
  • A significant trend of increasing injury severity was observed with age, with the highest median days lost due to injury at the U15-U16 stage (38 days).
  • The study concluded that apophyseal injuries exhibit a distal-to-proximal progression with age, with the highest injury burden observed at the hip/groin and knee regions and in the U12-U16 group.

Statistics:

  • 16,024 player-seasons were analyzed in the study.
  • 603 apophyseal injuries were identified, which constituted 10.4% of all reported injuries.
  • The injury burden was 3.5 in the hip/groin, 3.4 in the knee, 2.2 in the ankle/foot, and 1.4 in the pelvis/sacrum.
  • The highest median days lost due to injury was 38 days at the U15-U16 stage.
  • The U12-U16 group had the highest apophyseal incidence (~0.4 injuries/1000 hours) and burden (~20 days/1000 hours) regardless of injury location.

Sources:

  • Distal-to-proximal progression of apophyseal injuries with age in male youth academy footballers: a two-season prospective cohort study of 16,024 player-seasons. British Journal of Sports Medicine, 2025.
  • British Journal of Sports Medicine, Bmj Publishing Group, British Med Assoc House, Tavistock Square, London WC1H 9JR, England.

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