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Table 4 Comparison of furoin rate and implant failure rate in each group

From: Can posterior stand-alone expandable cages safely restore lumbar lordosis? A minimum 5-year follow-up study

Implant failure Stand-alone expandable cage fusion (n = 141 levels) Screw-assisted fusion (n = 165 levels) P value
Fusion rate, no. (%) 123(87.23) 151(91.51) .22a
Subsidence, no. (%) 23 (16.31) 8 (4.85) .0018a*
Pseudoarthrosis, no. (%) 13 (9.92) 4 (2.42) .02a*
Proximal junctional kyphosis, no. (%, per cases) 7 (10.1) 18 (22.5) .03a*
Cage breakage, no. (%) 8 (5.67) 0 (0) .01a*
Cage retropulsion, no. (%) 5 (3.55) 0 (0) .01a*
Screw malposition, no. (%) 0 (0) 6 (3.63) .02a*
  1. a χ2 test
  2. *P < .05
  3. No. number