ossified spine

例句：

1. 1. He had a severe case of osteoporosis, which led to an ossified spine.
   他患有严重的骨质疏松症，导致脊椎严重硬化。
2. 2.The patient's condition worsened as the ossified spine made it difficult for him to move around.
   随着硬化的脊柱使得患者难以移动，他的病情恶化了。
3. 3.The doctor performed surgery to remove the ossified spine and relieve the patient's pain.
   医生进行了手术以移除硬化的脊柱，缓解患者的疼痛。