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Effect of cable cerclage on regional blood circulation in rabbits: a scintigraphic study
Ozgur Karakoyun1, Ertan Sahin2, Mehmet Fatih Erol1
1Department of Orthopedics and Traumatology, Namık Kemal University, Tekirdağ, Turkey.
Purpose:
To evaluate changes in blood circulation of the femoral cortex in rabbits using scintigraphy before and after cable cerclage alone or combined with an intramedullary Kirschner wire.
Method:
Ten New Zealand rabbits were used. For the right femur, a 2-mm-thick cable was placed around the mid-diaphyseal region and squeezed with a 400-N force and locked with a clip. For the left femur, a 1.8-mm Kirschner wire was inserted retrogradely into the medullary canal, and a 2-mm-thick cable was applied using the same technique. The blood perfusion ratio of the region of interest (ROI) before and after surgery was evaluated using scintigraphy.
Results:
For the right femurs, the mean ROI perfusion ratio decreased by 45% from 2.51 to 1.37 after intervention (p=0.001). For the left femurs, the mean ROI perfusion ratio decreased by 56% from 2.12 to 0.92 after intervention (p<0.001). The mean ROI perfusion ratio post-intervention was higher in the right than left femurs (p=0.017).
Conclusion:
Cable cerclage around the femoral cortex significantly decreased blood circulation in the area.
