FIXATION DEVICE FOR QUADRILATERAL PLATE FRACTURES OF THE ACETABULUM VIA ILIOINGUINAL APPROACH

摘要

The present invention relates to an orthopedic internal fixator, especially a fixator for quadrilateral plate fractures of the acetabulum via ilioinguinal approach, which includes a shaped fixing titanium plate, whose outer contour is arc-shaped and basically the same as the pelvic arcuate line. While the pre-bending curvature of the proximal plate for quadrilateral plate is slightly greater than that of the arcuate line, making the proximal end of the titanium plate slightly away from the arcuate line. Elliptical fixing holes are evenly arranged along the fixing titanium plate, while the 3˜5 holes on the middle part are low-profile oval shape fixing holes. The titanium plate in the quadrilateral plate presents as a tilted slope with the exterior side being higher than the interior side, whose gradient is less than that of the bone surface of a linea terminalis of pelvis by about 15 degrees. The tilted direction of the two ends of the fixing titanium plate is opposite to that of the middle part, and is presenting as inside-outside gradually increasing tilted slopes with the exterior sides being lower than the interior sides and their gradients are about 15 degrees, thus the shaped fixing titanium plate placed behind the bone surface of a linea terminalis of pelvis with two ends upwarping. The invention provides a device for the treatment of quadrilateral plate fractures of the acetabulum via ilioinguinal approach, which has strong internal fixation capability and is easy to use.

主权项

1. A fixator for quadrilateral plate fractures of the acetabulum via ilioinguinal approach, comprising a shaped fixing titanium plate, a plurality of fixing holes are evenly arranged on said fixing titanium plate, a outer contour of a plate body of said fixing titanium plate is arc-shaped and is basically the same as pelvic arcuate line, a pre-bending curvature of a middle part of the fixing titanium plate is greater than the arcuate line, presenting as a tilted slope with the exterior side being higher than the interior side, whose gradient is less than that of a bone surface of a linea terminalis of pelvis, the tilted direction of two ends of the fixing titanium plate is opposite to that of said middle part, and is presenting as inside-outside gradually increasing tilted slopes with the exterior sides being lower than the interior sides, and the gradients of said two ends of the fixing titanium plate is greater than that of the bone surface of linea terminalis of pelvis, said shaped fixing titanium plate is placed behind the bone surface of the linea terminalis of pelvis with said two ends upwarping.