Table 4:

Adjacent level fracture statistics

	KP	VP	SJ
By visita
Total No. of procedures	44	46	37
No. of visits with adj. fracture	1	3	1
Total No. of individuals with adj. fracture	1	3	1
No. of levels with adj. fractures	6	8	9
By levelb
Total No. of levels	113	132	102
Total No. of individuals with adj. fracture	5	8	4

Note:—adj. indicates adjacent.

^aOnly visits with 1 type of procedure (KP, VP, or SJ) were included.

^bAll visits were considered.