爬行替代是指游离自体植骨块上的大部分骨细胞死亡形成死骨， 它仅作为新细胞向内生长的支架，最后被新骨完全替代。
术后12周以前，灭活骨段的爬行替代以骨吸收表现为主。
The creeping substitution of the devitalized bone was mainly manifested by bone resorption within 12 weeks postoperatively.
在内部发生的接触面到移植物中的爬行替代过程是一个渐进的过程。
There is a gradual process of creeping replacement which works inward from the host-graft junction toward the middle of the graft at a gradual rate.
臼盖本身可通过爬行替代被自体骨质吸收，无需再次手术取出内固定物。
The acetabulum cover can creep instead of being absorbed by the bone of the acetabulum cover, and the internal fixed object can be taken out without a second operation.
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