our topic today is elbow sports injuries. At the beginning of the program, can you briefly introduce the basic structure of the elbow joint so that the audience can have a basic understanding of this part?

骨折（Fracture）是一種常見的創傷性損傷，發生時骨骼受到外力作用導致其完整性破壞。對於如何更有效地預防、辨識及治療骨折，我們需要深入了解骨折的分類、成因、癒合過程以及併發症。本文將系統地解釋骨折的這些重要面向。