| Modification | Reason |
|---|---|
| Changed “comprises” to “consists of” | To improve academic style |
| Replaced “where” with “During this stage,” | To improve clarity and concision |
| Replaced “transforms into” with “is gradually replaced by” | To improve accuracy |
Rewritten paragraph: Bone repair consists of two stages: bone growth and bone remodeling. During the first stage, new bone tissue grows in the initial implantation phase, which requires a scaffold with good support and stability to facilitate growth. In the second stage, the scaffold’s newly formed bone tissue is gradually replaced by mature bone tissue that can bear load under stress and strain. For this reason, the scaffold must possess a certain elastic deformation that ensures strain remains within an optimal range for new bone growth and strengthening. It is evident that mechanical properties required for scaffolds in both stages of bone repair differ, if not contradict each other. Therefore, it is crucial to determine how biodegradable bone repair scaffolds can meet these different mechanical and biological requirements in both stages to achieve complete bone growth and reconstruction.
