Restoration and maintenance of segment lordosis in oblique lumbar interbody fusion

Table 4 Comparison of radiographic parameters between anterior and posterior group at Pre-, Post- after operation and final follow-up

	Anterior group (CPR ≥ 50%, 55 level)	Posterior group (CPR < 50%, 38 level)	P value
ADH (mm)
Base line	13.4 ± 3.7	12.3 ± 3.1	0.154
Post-operation	18.1 ± 2.7	17.0 ± 2.4	0.041*
Follow-up	17.1 ± 3.1	13.7 ± 2.7	0.000*
Post-operation increased	4.7 ± 3.0	4.6 ± 2.2	0.885
Follow-up decreased	1.0 ± 2.0	3.3 ± 2.3	0.000*
MDH (mm)
Base line	11.4 ± 2.3	10.9 ± 2.4	0.331
Post-operation	14.2 ± 1.8	14.3 ± 2.3	0.707
Follow-up	13.3 ± 2.1	12.3 ± 2.1	0.027*
Post-operation increased	2.8 ± 2.0	3.4 ± 2.3	0.157
Follow-up decreased	0.8 ± 1.7	2.0 ± 1.9	0.002*
PDH (mm)
Base line	10.3 ± 2.3	9.8 ± 2.5	0.291
Post-operation	11.1 ± 2.0	12.3 ± 2.1	0.003*
Follow-up	10.4 ± 1.7	11.1 ± 2.0	0.080
Post-operation increased	0.8 ± 2.3	2.6 ± 2.4	0.000
Follow-up decreased	0.7 ± 1.4	1.3 ± 2.0	0.107
FH (mm)
Base line	21.3 ± 2.9	21.8 ± 2.8	0.407
Post-operation	24.9 ± 2.4	26.5 ± 2.6	0.002*
Follow-up	23.3 ± 2.5	24.3 ± 2.7	0.066
Post-operation increased	3.6 ± 2.2	4.7 ± 2.2	0.014*
Follow-up decreased	1.6 ± 1.4	2.2 ± 1.6	0.044*
SLA(Degree)
Base line	4.1 ± 4.9	2.6 ± 4.6	0.157
Post-operation	10.0 ± 3.0	6.8 ± 3.0	0.000*
Follow-up	9.1 ± 2.9	3.2 ± 3.7	0.000*
Post-operation increased	5.9 ± 3.9	4.2 ± 3.2	0.026*
Follow-up decreased	0.9 ± 1.2	3.5 ± 2.3°	0.000*
Intraoperative endplate injury	3.6(2/55)	18.4(7/38)	0.029*
Cage Subsidence (%)	1.8(1/55)	28.9(11/38)	0.001*

ADH, anterior disc height; MDH, middle disc height; PDH, posterior disc height; FH, foraminal height; SLA, segmental lordosis angle. * P < 0.05, difference was significant

ISSN: 1471-2474