Systems and methods for bone fixation

摘要

Systems and methods for bone fixation are disclosed. A fixation system can have a planar fixation device and a laterally-fixed fixation apparatus. The planar fixation device can have a planar surface and at least one opening having side walls defining an at least generally cylindrical shape. The laterally-fixed fixation apparatus can have an at least generally cylindrical shaped head portion having outer wall sections at least partially surrounding a central hollow area. The head portion can have an inner bottom surface. An expander hub is provided in the fixation apparatus for positioning at least partially within the central hollow area of the head portion and can be seated at least partially on the inner bottom surface of the head portion. The expander hub is rotatable to force the outer wall sections of the head portion outwardly for engaging and locking the fixation apparatus in place in the opening. The fixation apparatus is further adapted for rotation about a longitudinal axis of the fixation apparatus without lateral toggle movement relative to the planar surface of the planar fixation device. In other aspects, systems for fixating an orthopedic guide and systems and methods for compressing bone portions are also provided.