FIG. 2.

Mechanical properties versus collagen fibers in CPC scaffold: (A) Stress-strain curves, (B) flexural strength, (C) elastic modulus, (D) work-of-fracture (toughness) (mean±sd; n=6). CPC composite scaffolds showed a noncatastrophic failure, with the load-bearing capability increasing with more collagen fibers. (E) SEM micrograph of the surface of CPC with 0% collagen. (F) Surface features of CPC composite containing 8% collagen fibers, with arrows, indicate features that were absent in specimens without collagen fibers. CPC composite specimens with collagen fibers had noticeably rougher surfaces than those without collagen fibers. CPC, calcium phosphate cement; SEM, scanning electron microscopy. Color images available online at www.liebertonline.com/tea