This is a 14 year old male who presented to the A.I duPont emergency room complaining of left knee pain after having fallen off his bicycle.
Exam reveals a swollen left knee.
Skin was intact. There was tenderness to palpation diffusely about the knee. Valgus stress at full extension and at 30 degrees revealed an increased laxity on the left. Anterior draw and Lachman tests were also asymmetric with an increased excursion on the left. Neurovascular exam was unremarkable.