Skip to main content

Table 2 Intra-operative characteristics comparing freehand and guided surgery K-wire placement compared to the pre-operative plan

From: Computer-assisted subcapital correction osteotomy in slipped capital femoral epiphysis using individualized drill templates

Intra-operative Characteristics Direction Freehand
Mean ± STD
Guided
Mean ± STD
p value
Duration (minutes)   4.1 ± 2.0 1.5 ± 0.7 < 0.001
Number of X-rays Antero-posterior 10 ± 3 2 ± 1 < 0.001
Medio-lateral 4 ± 3 1 ± 1 < 0.001
Pooled 14 ± 5 3 ± 1 < 0.001
  1. Statistically significant p values (p < 0.05) are in bold. Pooled data include values reported for both views. Compared to freehand surgeries, guided surgeries were significantly faster and required less numbers of intra-operative x-rays