Table 3:

Types of cement leaks (out of 103 vertebrae)

	Cases
	Number	%
1) Venous leaks
1a. Perivertebral	8	7.7%
1b. Epidural	10	9.7%
1c. Toward azygous vein	2	1.9%
2) Intradiscal leaks	3	2.9%
3) Soft-tissue leaks
3a. Into the spinal canal	4	3.9%
3b. Posterior-mediastinal space	24	23%
3c. Along the puncture path	1	1%
TOTAL	52	50.5%