Table 1.

The O’Driscoll histological scores of the four groups

	Sample 1	Sample 2	Sample 3	Sample 4	Sample 5	Mean	SD
4 weeks
CON	3	5	3	3	4	3.6	0.89443
COL	5	5	8	6	5	5.8	1.30384
BMSCs	14	16	16	15	15	15.2	0.83666
BNCs	13	12	12	14	12	12.6	0.89443
8 weeks
CON	5	4	6	4	3	4.4	1.14018
COL	9	11	10	10	9	9.8	0.83666
BMSCs	19	18	17	18	18	18	0.70711
BNCs	17	19	17	18	18	17.8	0.83666

SD standard deviation