Efficacy of Percutaneous Image-Guided Rupture of Lumbar Facet Cysts: A Retrospective Study

Table 1

Demographic data of patients undergoing cyst rupture (N = 57) and those included in the control group (N = 41).

	Cases with cyst rupture	Control group	value
Sex			0.295
Male/Female	33/24 cases	28/13 cases
Age; mean (range)	65.6 (31–82) years	67.0 (35–84) years	0.519
Lumbar level of cyst			0.783
L2/3 : L3/4 : L4/5 : L5/S	2 : 9 : 36 : 10 cases	3 : 8 : 24 : 6 cases
History of previous lumbar surgery			0.481
No	36 cases	23 cases
Yes	21 cases	18 cases
Fenestration	10 cases	7 cases
Microendoscopic decompression	11 cases	11 cases
Grade of facet joint OA			0.868
Grades ½	5/22 cases	0/24 cases
Grades ¾	25/5 cases	11/6 cases
Degenerative spondylolisthesis			0.171
No	24 cases	23 cases
Yes	33 cases	18 cases
Grades ½	27/6 cases	16/2 cases
Lumbar lordosis	39.6 ± 7.3°	40.7 ± 6.7°	0.582
Intervertebral angle	5.7 ± 2.6°	6.4 ± 2.5°	0.206
Area of cyst	56.9 ± 31.3 mm^2	41.5 ± 16.3 mm^2	0.009
VAS score	80.7 ± 6.8 mm	59.4 ± 12.3 mm	<0.0001
JOA score	15.6 ± 2.8 points	20.9 ± 2.9 points	<0.0001

Significant difference between cases with cyst rupture and the control group (). OA, osteoarthritis; JOA, Japanese Orthopedic Association.