Methods of reduction of bone fractures
First Claim
1. Improvements in methods of reduction of bone fractures, especially those which make use of a longitudinal plate of an oxidation resistant metal placed along the broken bone with its halves in contact with the ends of the segments thereof and with apertures for the insertion of screws into the proximal and distal cortical bone substance, comprising bringing together the two bone segments by first fastening one of the ends of the longitudinal plate to one of the segments then fastening the central portion of the same plate to the other segment through a slot provided in the said central portion thereof, said plate being further provided with a second slot having teeth on its internal side wall, forming a rack, said second slot being situated adjacent one of the ends of said plate, and progressively bringing together the two segments of the broken bone until they are placed in contact and alignment for the purpose of their relative immobilization for their further mending, by displacement of the said other bone segment with respect to said plate by the action of a tool applied to the slot situated adjacent the end of said plate and bearing a lateral pinion cooperating with the internal rack toothing of said second slot.
0 Assignments
0 Petitions
Accused Products
Abstract
A method of reduction of bone fractures is described wherein two segments of a broken bone are drawn together by means of a plate extending across both segments, securing one end of the plate to one segment of bone, securing the other side of the plate through a slot in the plate to the other segment of bone, and applying a tool having a pinion engaging another slot in the plate provided with a rack, a pin on the end of the tool engaging a hole in the bone, so that upon rotation of the tool the two segments of bone are drawn together. A jig for drilling the necessary holes for securing the segments is also described.
123 Citations
3 Claims
- 1. Improvements in methods of reduction of bone fractures, especially those which make use of a longitudinal plate of an oxidation resistant metal placed along the broken bone with its halves in contact with the ends of the segments thereof and with apertures for the insertion of screws into the proximal and distal cortical bone substance, comprising bringing together the two bone segments by first fastening one of the ends of the longitudinal plate to one of the segments then fastening the central portion of the same plate to the other segment through a slot provided in the said central portion thereof, said plate being further provided with a second slot having teeth on its internal side wall, forming a rack, said second slot being situated adjacent one of the ends of said plate, and progressively bringing together the two segments of the broken bone until they are placed in contact and alignment for the purpose of their relative immobilization for their further mending, by displacement of the said other bone segment with respect to said plate by the action of a tool applied to the slot situated adjacent the end of said plate and bearing a lateral pinion cooperating with the internal rack toothing of said second slot.
Specification