Kaysee is a 14-year-old athlete who was injured during a basketball game. Kaysee has always been a fairly healthy child. She has no history of any...

Kaysee is a 14-year-old athlete who was injured during a basketball game. Kaysee has always been a fairly healthy child. She has no history of any major illness. However, her physician is surprised that she has sustained two fractured bones from a relatively mild trauma. Describe three possible underlying conditions that would increase Kaysee's risk of fracture. (Keep her age in mind.)