Willis Paull, PhD

Articles by Willis Paull, PhD

A 12-year-old girl complains of left knee pain and swelling that resulted from a collision with another player while she was playing kickball the day before. Her left foot was planted as she tried to catch a ball, and she was hit on the outside of the left knee. She fell to the ground and was unable to walk on the injured leg; overnight, the knee became more swollen and painful.

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