While playing on her swing set, 10-year-old Yasmin falls and breaks her right leg. At the ER, Yasmin's parents learn that she has broken the end of her tibia where the epiphysis meets the diaphysis. Her fracture is set and heals eventually.

8 years later, during a routine doctor's exam, Yasmin learns that her right leg is 2 cm shorter than her left, probably due to the accident. What might have caused this difference?