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Comparative clinical analysis of OLIF51

versus MIS-TLIF for single to multi-level

lumbosacral fusion

Kotani Y, Tachi H, Nakamura Y, and Saito T

Department of Orthopaedic Surgery, Kansai Medical University Medical Center, Osaka JAPAN

Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine

Objective

◼ Compare the clinical and radiologic

results between OLIF51 and MIS-TLIF in

single to multi-level fusion for

lumbosacral degenerative disorders

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OLIF51 MIS-TLIF

Number 62 62

Age 66 (30-84) 65 (27-88)

Disorders

L4 DS & 51DDD: 14

L5/S1 FS: 11

L5 IS: 7

51 TLIF Pseudo 6

L4 DS & 51FS: 6

L5 IS: 25

51 FS: 9

L4 DS & 51DDD: 5

L4 DS & 51FS: 3

51 Pseudo 1

Fixed segments 1.6 (1-3) 1.4 (1-3)3

Patients and Methods

OLIF51 w/ Perc. PF in Lateral Position

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Incision medial to ASISLt CIV enhanced O-arm image

Allograft and cage placement

Woods K, Hynes R. Spine J 17, 2017

Perc. modified CBT fixation

OLIF51 MIS-TLIF

Fup period (months) 23 (12-39) 41 (13-76)

Op time / seg (min) 130 (65-263) 100 (50-237)

EBL /seg (ml) 56 (0-265) 65 (0-240)

Fusion rate 98% 90%2 revised for pseudo

Neurovascular

complications

1.6%1 case of microinjury

repaired

0%5

Results

JOABPEQ Effective rate (%)

6

0

20

40

60

80

100

Pain LBFunction

Gait Social Psycho

85

44

69

41

28

66

29

49

60

43

OLIF51 MIS-TLIF*

*

*

*: P<0.01

Visual Analogue Scale (VAS) at Fup

7

*

0

20

40

60

80

100

LBP LE pain LE numbness

24 24 19

36 29 30

OLIF51 MIS-TLIF

* *

*: P<0.05

51 Disc Angle: Preop and Fup

8

0

10

20

OLIF51 MIS-TLIF

10 10

15

11

51 angle Pre 51 angle Fup

*: P<0.01 different

from MIS-TLIF

*

51 Posterior DH: Preop and Fup

9

0

10

20

OLIF51 MIS-TLIF

4 4 5 6

51 PDH Pre 51 PDH Fup

OLIF L4-S1 and PPS in lateral

position surgery, 130 min, EBL 20 ml

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Comparison between OLIF51

and MIS-TLIF in this study

◼ OLIF51 group demonstrates

• Relatively longer OP time

• Better LBP, LB function and Gait

• Larger segmental lordosis

◼ This trend was emphasized compared to 51

single-level controlled study (paper 26),

indicating minimum invasiveness of anterior

surgery for back muscles in multiple-level

fusion11

Conclusion

◼ The multiple-level anterior fusion using

OLIF51 and 25 with PPS serves as a

viable and effective procedure

providing less residual LBP and higher

fusion rate

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