Table 2.

Comparison of blood flow grade of TIMI.

Grade	Joint group, n = 55	Control group, n = 47	X 2	P
0 grade	0	3(6.38)	3.617	0.057
1 grade	3(5.45)	14(29.79)	10.80	0.001
2 grade	10(18.18)	10(21.28)	0.154	0.695
3 grade	42(76.36)	20(42.55)	12.15	<0.001