Table 2

Incidence rate of injury ×1000 person-years of training, per single injury site (knee, hip, ankle, spine, muscle injury or other) and typology of the playing ground

Site of injuryHard courtNatural grassSynthetic grass
Incidence rate × 100095% CIIncidence rate × 100095% CIIncidence rate × 100095% CI
Knee20.913.6 to 30.716.910.5 to 25.719.512.9 to 28.3
Hip5.01.8 to 10.92.40.5 to 7.01.40.2 to 5.2
Ankle21.714.3 to 31.710.55.6 to 17.814.58.9 to 22.2
Spine2.50.5 to 7.30.00.0 to 3.02.20.4 to 6.3
Muscular injury9.24.6 to 16.415.39.2 to 23.86.53.0 to 12.3
Other9.24.6 to 16.45.62.3 to 11.66.53.0 to 12.3