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Table 3 Distribution of screw misplacement

From: Lumbosacral pedicle screw placement using a fluoroscopic pedicle axis view and a cannulated tapping device

  No. of misplaced screws (%)
Level  
 L1 2 (6.7)
 L2 5 (10.4)
 L3 4 (3.8)
 L4 12 (4.2)
 L5 12 (3.8)
 S1 2 (2.9)
Direction  
 Superior 1
 Inferior 3
 Medial 16
 Lateral 17
  1. No. number