Development of a Stable, Fatigue Resistant, Interlocked Intramedullary Nail Used to Treat Critical Sized Segmental Defects of the Tibia
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Authors
Maloney, Patrick
Issue Date
2009
Type
Thesis
Language
en_US
Keywords
Alternative Title
Abstract
Tibia fractures are the most common of all long bone fractures. Large
segmental defects (also known as critical-sized defects) of the tibia are difficult to
treat due to the tibia's reduced blood supply and incomplete circumferential
muscle coverage. Multiple techniques, including casting, rigid plating, external
fixation, and intramedullary nailing have been developed in order to treat these
kinds of defects. However, until more recently, most cases ultimately ended in
amputation of the limb due to complications such as malunion or nonunion of the
bone fragments. In order to successfully treat critical-sized defects of the tibia, an
orthopedic implant of sufficient strength and stiffness, capable of resisting axial
and rotational forces, must be employed. Therefore, it is proposed that the ideal
treatment method for a critical-sized defect of the tibia should include reamed,
interlocked, intramedullary nailing in conjunction with an autogenous cancellous
bone graft packed around the defect. Interlocked intramedullary nailing was
chosen because it provides the most rigid form of axial and rotational stability,
while still allowing for controlled, interfragmentary movements, an essential
component of proper bone regeneration.
Description
vi, 56 p.
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