corrective operation of pectus excavatum

例句：

1. 1. The corrective operation has significantly improved his health.
   这次矫正手术极大地改善了他的健康状况。
2. 2. The patient underwent a corrective operation to repair the damaged bone.
   患者接受了一次矫正手术来修复受损的骨骼。
3. 3. The surgeon performed a corrective operation on the injured knee.
   外科医生对受伤的膝盖进行了矫正手术。