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Table 1 Experimental results

From: Reinforcing the role of the conventional C-arm - a novel method for simplified distal interlocking

   Number of radiographs    Radiation time [s]    Operation time [min]  
  Freehand Guided Freehand Red. [%] Freehand Guided Freehand Red. [%] Freehand Guided Freehand Red. [%]
2 ML screws 14.3 ± 5.6 5.9 ± 2.6 59 8.3 ± 3.2 3.4 ± 1.5 59 3.6 ± 1.2 2.7 ± 0.9 25
2 AP screws 21.7 ± 13.2 8.9 ± 3.6 59 12.6 ± 7.7 5.2 ± 2.1 59 4.8 ± 2.8 3.4 ± 1.2 29
per inserted screw 17.6 ± 10.3 7.4 ± 3.4 58 10.2 ± 6.0 4.3 ± 2.0 58 4.1 ± 2.1 3.2 ± 1.2 22
per procedure (4 screws) 65.3 ± 15.7 29.5 ± 6.4 55 37.9 ± 9.1 17.1 ± 3.7 55 15.5 ± 4.2 12.7 ± 2.9 18
  1. Number of taken radiographs, radiation time and operation time for the conventional freehand technique as well as for the proposed guided freehand method. Numbers represent mean ± standard deviation and percentage of reduction due to guided freehand