This cohort observational study was undertaken to test the hypothesis that
the incidence of injuries for girls participating in high school sports is
greater than that for boys. From 1995 through 1997, players were included i
n our study if they were listed on the school's varsity team roster for boy
s' or girls' basketball, boys' or girls' soccer, boys' baseball, or girls'
softball. Injuries and opportunities for injury were recorded daily, Certif
ied athletic trainers reported injury and exposure data. Based on 39,032 pl
ayer-seasons and 8988 reported injuries, the injury rates per 100 players f
or softball (16.7) and for girls' soccer (26.7) were higher than for baseba
ll (13.2) and boys' soccer (23.4). The knee injury rates per 100 players fo
r girls' basketball (4.5) and girls' soccer (5.2) were higher than for thei
r male counterparts. Major injuries occurred more often in girls' basketbal
l (12.4%) and soccer (12.1%) than in boys' basketball (9.9%) and soccer (10
.4%). Baseball players (12.5%) had more major injuries than softball player
s (7.8%), There was a higher number of surgeries, particularly knee and ant
erior cruciate ligament surgeries, for female basketball and soccer players
than for boys or girls in other sports.