An adolescent athlete may have an avulsion fracture of the anterior superior iliac spine (ASIS) during strenuous exercise.
(1) adolescent athlete prior to complete ossification of the pelvis
(2) sudden onset of hip pain associated with strenuous exercise
(3) may be preceded by a period of chronic pain consistent with apophysitis
(4) exclusion of alternative diagnoses
at the origin of tensor fascia lata
swinging a baseball bat
at the origin of the sartorius
running, sprinting, kicking or jumping
depends on direction of trauma
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