hypostratum

例句：

1. 1.The patient was fitted with a new hip prosthesis after the surgery.
   手术后，患者安装了新的髋关节假体。
2. 2.The doctor performed an arthroplasty on his knee to replace the damaged joint.
   医生对他的膝盖进行了关节置换手术，以替代受损的关节。
3. 3. She used her own bone for the prosthetic leg, which greatly improved her mobility.
   她用自己的骨头制作了假肢，这极大地提高了她的活动能力。