Athletes with an anterior cruciate ligament (ACL) injury followed by ACL reconstruction
(ACLR) often perform various testing to guide return to sport, but preinjury data are
rarely available for comparison. This longitudinal case-control study reports absolute
value and between-leg symmetry data on maximal performances for single-leg hop height and
distance, muscle strength, and side hop landing mechanics of an 18-year-old female soccer
athlete collected 5 months before sustaining an ACL injury and again at 10, 13, and 29
months post-ACLR. Her data were compared across test sessions and to cross-sectional data
of 15 asymptomatic female athletes.