Standard versus Minimally Invasive Transforaminal Lumbar Interbody Fusion: A Prospective Randomized Study

Table 2

Spondylolisthesis information [S TLIF = standard transforaminal lumbar interbody fusion; MI TLIF = minimally invasive transforaminal lumbar interbody fusion; Degen = degenerative].

	S TLIF	MI TLIF
Level
L3-4	2 (5%)	2 (5%)
L4-5	14 (35%)	15 (37.5%)
L5-S1	24 (60%)	23 (57.5%)
Type
Degen	28 (70%)	26 (65%)
Isthmic	12 (30%)	14 (35%)
Grade
1	20 (50%)	19 (47.5%)
2	20 (50%)	21 (52.5%)