incudal fossa

例句：

1. 1. The patient was admitted to the hospital with a fractured spine.
   患者因脊柱骨折被送进医院。
2. 2. The doctor performed an operation on the patient's spine to relieve his pain.
   医生为患者的脊柱进行了手术以缓解他的疼痛。
3. 3.The MRI scan revealed a narrow incudal fossa that required immediate surgery.
   核磁共振扫描显示一个狭窄的椎管，需要立即进行手术。