Fig. 1.

Scanning electron microscopy images and mechanical testing of the scaffolds and natural tissue. (A) synthesis mechanism of PEUU, (B) self-fitting mechanism of the scaffolds; (C) Scanning electron microscopy images of NS, CNS1, CNS2, CNS3, and NTBI; (D–G) The mechanical characterization of native tendon tissue, NS, CNS1, CNS2, and CNS3; (H–K) Dynamic mechanical analysis of CNS1, CNS2, and CNS3. (L–M) Laser confocal microscopy and atomic force microscopy of NS and CNS3. *, significant difference compared with NS, P < 0.05; **, significant difference compared with NS, P < 0.01; NTBI, natural tendon-to-bone interface; NS, nanofiber scaffold; CNS, crimped nanofiber scaffold.