| 摘要 |
The invention relates to bone nails for positioning fractured bone portions relative to one another. In particular, the present invention provides a bone portion securing device adapted to be received within a bone cavity, the device including at least one portion capable of being radially expanded under an applied force, the at least one expansion portion having at least one portion capable of being expanded under an applied force, the at least one expansion portion having at least one portion, at least one characteristic of which is selected to be different to a corresponding at least one characteristic of at least another part of the portion.
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