(A) Type I: Apophysitis.
(B) Type II: Incomplete stress fracture.
(C) Type III: Complete fracture, apophyseal avulsion, apophyseal metaphyseal combination.
Reproduced with permission from: Pring ME, Wenger DR, Rang M. Elbow: Proximal radius and ulna. In: Rang's Children's Fractures, 3rd ed, Lippincott Williams & Wilkins, Philadelphia 2005. Copyright © 2005 Lippincott Williams & Wilkins.
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