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Operative Variables for Posterior Lumbar Fusion, N = 6094.
| Male | 45.0% |
| Female | 55.0% |
| PLF (CPT 22612) | 70.6% |
| PLIF/TLIF (CPT 22630) | 24.0% |
| PLF + PLIF/TLIF (CPT 22633) | 5.0% |
Abbreviations: CPT, current procedural terminology; PLF, posterior lumbar fusion; PLIF, posterior lumbar interbody fusion; TLIF, transforaminal lumbar interbody fusion.
