Comparison of the clinical efficacy of two fixation methods combined with OLIF in the treatment of lumbar spondylolisthesis in adult patients

Table 4 Comparison of imaging parameters before and 12 months after surgery

	ASRSF + OLIF	P	PPSF + OLIF	P
N	25		28
Intervertebral space height
Pre-surgery	10.8 ± 2.4 mm		10.3 ± 2.1 mm
12 months post-surgery	14.0 ± 1.0 mm	0.02*	14.3 ± 1.0 mm	0.01*
Foraminal height
Pre-surgery	12.5 ± 1.6 mm		12.5 ± 1.4 mm
12 months post-surgery	16.9 ± 2.1 mm	0.01*	16.6 ± 2.3 mm	0.01*
Lumbar lordosis
Pre-surgery	34.6° ± 4.1°		35.5° ± 3.8°
12 months post-surgery	45.2° ± 5.6°	0.03*	44.2° ± 3.6°	0.03*

ASRSF, anterior single rod-screw fixation; PPSF, percutaneous pedicle screw fixation
*Comparing with pre-operative imaging parameters, the difference was statistically significant

ISSN: 1749-799X