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. Author manuscript; available in PMC: 2017 Jul 21.
Published in final edited form as: Spine (Phila Pa 1976). 2016 May;41(10):901–909. doi: 10.1097/BRS.0000000000001361

Table 4.

SPS Levels of Reoperation Surgery.*

All Reoperation Patients With Complete Information
(n=63)		 Reoperation at the Same Level as Index Operation
(n=21)		 Reoperation at a Different Level than the Index Operation
(n=29)		 Reoperation Levels Unspecified
(n=13)
Recurrent stenosis or progressive spondylolisthesis 36 11 23 2
Pseudoarthrosis/fusion exploration 1 0 0 1
Complication 3 0 0 3
Other 13 4 2 7
New condition 10 6 4 0
*

Reoperation at the Same Level as Index Operation: One or more reoperation level(s) are in the index surgery level (L23, L34, L45, L5S1), and no reoperation levels are not in the index surgery level.

Reoperation at a Different Level than the Index Operation: At least one reoperation level is not in the index surgery level.

Reoperation Levels Unspecified: No level information reported in the repeat spine surgery (RSS) dataset.