Intramedullary magnetic lengthening nails represents a marked advance in the process of limb lengthening, reducing the complications associated with other methods, and improving patient's comfort. However, one important limitation is its lengthening ability, especially when it comes to short bones. Previous reports have shown techniques that may allow further lengthening but at a cost of having to carry out repeated procedures, requiring the use of other devices, and submitting the patient to long-winded surgical procedures. This report presents a novel technique to achieve lengthening beyond the initial reach of the nail, in a simple and quick procedure, without the need of implanting any additional devices.
The 8-plate has shown to be more efficient in producing angular deformity than staples. However, the length of the screw has showed no role in the 8-plate function.
Traditional systems of hemiepiphysiodesis are based on the application of asymmetrical compression to the physis to correct angular deformities. The guided growth method claims to act as a tension plate avoiding compression. The aim of this study was to confirm or refute this claim. Twenty-four White New Zealand rabbits were subjected to a proximal tibial hemiepiphysiodesis using either staples or a plate and two-screws method. Both methods succeeded in producing deformity. The initial existent histological differences between systems became less apparent after 6 weeks of hemiepiphysiodesis, when histological results were very similar. The findings suggest that the eight-plate system produces, like staples, compression of the physis, but the forces are applied more gradually.
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