Repair of bone fracture using flexible fully or partially cannul

Details Repair of bone fracture using flexible fully or partially cannul Repair of bone fracture using flexible fully or partially cannul

1998-07-24

2000-01-04

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 73, 606 77, A61B 1758

Patent

active

060105070

ABSTRACT:
A bone fracture is repaired using a flexible, resorbable cannulated, self-tapping (in soft bone) compression and decompression fixation element to retain respective sections of bone in a spatial relationship that facilitates mending with minimal or no compression, that might otherwise lead to collapse and/or misalignment of the bone sections. The fixation element is inserted through a first bone section and intersects a second bone section at an acute angle relative to the fracture. As the fixation element is driven into the second bone section, its elasticity stably secures the mutually facing surfaces of the two bone sections in a mending position. Since the fixation element is flexible, its forward end may be deflected when it encounters the sidewall of the second bone section. This deflection imparts a torquing force, which urges the first bone section away from the fracture joint, thereby off-loading the compression force the fixation element naturally imparts, as it is self-tapped into the soft portion of the second sections of bone. The fixation element is then adjusted so that the two opposing bone sections optimally just touch one another, allowing the fracture to mend, sometimes using resistance against a medullary block such as a transverse pin or graft. The fixation element's resorbable material is eventually replaced by bone tissue as the two bone sections grow together.

REFERENCES:
patent: 5716358 (1998-02-01), Ochoa et al.
patent: 5893850 (1999-04-01), Cachia

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