Table III.

Surgical variables of patients.

1st to 2nd surgery interval (Days)	36.58±23.69 (11-94)
Operated spinal level	L2-3 7.36% (n=7), L3-4 14.73% (n=14),
	L4-5 57.89% (n=55), L5-S1 20% (n=19)
Surgical method (TLIF with bone graft and cage:
Group A, TLIF with bone graft only: Group B) Group B 33.68% (n=32)	Group A 66.31%(n=63)
Operation time (Minutes)	87.13±18.72 (63-130)
Estimated Blood Loss (ml)	201±61.44 (110-400)
Screw strength low/ osteoporosis	35.78% (n=34)
Culture organism growth	Gm +ve (n=32), Gm-ve (n=20), Both (n=3), No growth(n=40)
Histopathology	Acute chronic discitis=48, Discitis=44, Granulomatous=3

Abbreviations - TLIF: Transforaminal Lumbar Interbody Fusion, L: Lumbar, S: Sacral