Cumulative Incidence of Revision for a Balanced Knee System at a Mean 8-Year Follow-Up: A Retrospective Review of 500 Consecutive Total Knee Arthroplasties

Table 9

The proportion of radiolucent line widths per tibial zone.

Component	None	<1 mm	1 -2 mm	>2 mm
Tibia: bone interface (A), n=5	1	1	3	0
zone 1	4	1	0	0
zone 2	4	1	0	0
zone 3	4	1	0	0
zone 4	4	1	0	0
zone 5	1	1	0	0
zone 6
Tibia: bone cement/prosthesis (A), n=3	1	1	0	1
zone 1	1	1	0	1
zone 2	1	2	0	0
zone 3	1	2	0	0
zone 4	3	0	0	0
zone 5	3	0	0	0
zone 6

a: anteroposterior.