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Table 1 Characteristics of patients who developed PCM after TLIF among 953 Patients

From: Cage positioning as a risk factor for posterior cage migration following transforaminal lumbar interbody fusion – an analysis of 953 cases

  PCM Non-PCM Control P-value
No. 24 929 100  
Age 69.41 ± 6.96 62.48 ± 12.34 61.92 ± 13.25 0.006
Sex(M/F) 8/16 306/623 35/65 1.000
Diagnosis
 SS 1 123 15 0.057
 KS 7 96 21  
 DS 13 590 45  
 Revision 3 120 19  
Fusion levels 2.83 ± 1.37 2.17 ± 1.39 2.43 ± 1.55 0.023
Kidney/Bullet shaped cage 36/12 (18/6)a 842/669 90/73 0.063b
Level of cage inserted (level of PCM)
 L1/2 1 19 4  
 L2/3 4 (1) 116 16  
 L3/4 13 (3) 343 42  
 L4/5 22 (17) 712 71  
 L5/S1 8 (3) 321 30  
  1. PCM posterior cage migration, SS spondylolytic spondylolisthesis, KS degenerative kyphosis or scoliosis, DS degenerative spondylolisthesis. The p-value is comparing PCM and non-PCM groups
  2. a24 migrated cages from the PCM group
  3. bComparison of 24 migrated cages to other non-migrated cages