Table-IV.

ODI scores (x̄±SD) (%)

Group	Case number (n)	Preoperative score	Score 3 months after surgery	t	P	Score 6 months after surgery	t	P
MED	45	(57.17±2.96)%	(19.12±2.55)%	120.085	<0.0001	(16.98±1.89)%	128.958	<0.0001
PTED	45	(58.21±3.48)%	(21.18±2.40)%	80.571	<0.0001	(17.05±1.94)%	179.777	<0.0001
t	-	-1.526	-3.943			-0.173
P	-	0.282	0.692			0.864