TABLE II.

Histological Tissue Quality Score

	Score*	P Value
4 weeks
Control	2.8 ± 1.5	0.29
MSC	3.8 ± 1.6
12 weeks
Control	1.7 ± 1.5	0.008†
MSC	5.7 ± 0.4
24 weeks
Control	3.9 ± 1.3	0.021‡
MSC	6.0 ± 0

^*Results of histological scoring system (range, 0 to 6) for regenerated meniscus. The values are given as the mean and the standard deviation.

^†The difference between the mesenchymal stem cell (MSC) and control groups was significant (p < 0.01).

^‡The difference between the groups was significant (p < 0.05).