Table 2

Radiographic, perioperative, and postoperative variables of patients undergoing TLIF vs PLF.

VariablesTLIF (N = 591)PLF (N = 259)P Value
Radiographic
 Disc height, mm, mean ± SD8.8 ± 3.28.8 ± 2.90.785
 Flexion-extension difference, n (%)68 (11.5)27 (10.4)0.555
 Flexion-extension measurement, mm, mean ± SD3.0 ± 2.62.7 ± 1.50.620
 Spondylolisthesis, n (%)413 (69.9)185 (71.4)0.341
  Grade 1373173
  Grade 23911
  Grade 311
Perioperative
 Estimated blood loss, cc, mean ± SD415.6 ± 300.8381.7 ± 299.60.190
 Operative time, min, mean ± SD207.4 ± 58.7203.6 ± 55.70.441
Postoperative
 Length of stay, d, mean ± SD2.8 ± 2.33.0 ± 1.40.110
 Discharged, n (%)a 0.026
  Home510 (86.3)209 (80.7)
  Inpatient rehabilitation facility29 (4.9)26 (10.0)
  Skilled nursing facility14 (2.4)11 (4.2)
  • a 38 and 13 missing values in TLIF and PLF, respectively.

  • PLF, posterolateral fusion; TLIF, transforaminal lumbar interbody fusion.