sacrococcyx

例句：

1. 1.The patient's sacrococcyx was irritated by the pressure from the bedsheets.
   病人的尾椎骨因床单的压力而感到不适。
2. 2. During surgery, the surgeon had to remove the patient's sacrococcyx for better access.
   手术中，外科医生需要切除患者的尾椎骨以便更好地进行操作。
3. 3.The patient's sacrococcyx was a source of concern during the recovery period.
   在康复期间，患者的尾椎骨成为关注焦点。