hourglass fracture

例句：

1. 1. The patient's condition worsened after the surgery, requiring a new hourglass fracture fixation.
   手术后，患者的病情恶化，需要一个新的钟形骨折固定。
2. 2. The researcher discovered that the mechanism behind the hourglass fracture was not as straightforward as previously thought.
   研究者发现，钟形骨折背后的机制并不像之前认为的那样简单。
3. 3. Due to the complexity of the hourglass fracture, it is crucial to have a thorough understanding of the underlying anatomy.
   由于钟形骨折的复杂性，对基础解剖学有深入理解至关重要。