| 摘要 |
The invention relates to improvements in femoral shafts, which consist in: replacement of the cylindrical surface of its distal zone by longitudinal striations 1; expansion of the front and lateral zones of the collar 2; an increase in the radius of curvature 3 of transition between sections; and rounding with a greater radius of the outer upper angle 4 of the proximal zone. <IMAGE>
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