Table 1.

Sample abbreviations used in this study.

Name of sample	Description of sample
Sham	Empty defect
Control	Original scaffold of CHAS without any drugs
ALN	Scaffold with physically adsorbed ALN
BMP-2	Scaffold with physically adsorbed BMP-2
B + A (P)	Scaffold with physically adsorbed BMP-2 and ALN
A + B (E)	Scaffold with physically adsorbed ALN and BMP-2 encapsulated in PLGA microspheres
B + A (E)	Scaffold with physically adsorbed BMP-2 and ALN encapsulated in PLGA microspheres