Abstract: A bone fixation assembly is provided and may include a fixation member defining at least one aperture. At least two locking features may be circumferentially spaced around an inner perimeter of the at least one aperture and may include a first end and a second end. The at least two locking features may each include a longitudinal axis extending substantially perpendicular to an axis extending through the at least one aperture. A fastener may include at least two discrete locking members respectively received in the at least two locking features at the first end. The at least two discrete locking members may be circumferentially spaced around an outer perimeter of the fastener, may extend from an outer surface of a head of the fastener, and may be received within the first end in an unlocked state and rotated from the first end to the second end in a locked state.

Abstract: A bone fixation system includes a fixation plate including at least one fixation hole and at least one fastener. The fastener includes a coupler and a shank for engaging a bone. The coupler is threadably engaged with the fixation hole and includes an aperture receiving a proximal portion of the shank. The proximal portion of the shank can move relative to the coupler. The proximal portion of the shank includes a driver engagement recess for rotating the shank and the coupler together relative to the fixation plate without rotating the shank relative to the coupler and for threading the coupler to the fixation hole.

Abstract: A bone fixation assembly is provided and may include a fixation member defining at least one aperture. At least two locking features may be circumferentially spaced around an inner perimeter of the at least one aperture and may include a first end and a second end. The at least two locking features may each include a longitudinal axis extending substantially perpendicular to an axis extending through the at least one aperture. A fastener may include at least two discrete locking members respectively received in the at least two locking features at the first end. The at least two discrete locking members may be circumferentially spaced around an outer perimeter of the fastener, may extend from an outer surface of a head of the fastener, and may be received within the first end in an unlocked state and rotated from the first end to the second end in a locked state.

Abstract: A bone fixation system includes a fixation plate including at least one fixation hole and at least one fastener. The fastener includes a coupler and a shank for engaging a bone. The coupler is threadably engaged with the fixation hole and includes an aperture receiving a proximal portion of the shank. The proximal portion of the shank can move relative to the coupler. The proximal portion of the shank includes a driver engagement recess for rotating the shank and the coupler together relative to the fixation plate without rotating the shank relative to the coupler and for threading the coupler to the fixation hole.

Abstract: A bone plating system includes a plate member and a first bone screw. The plate member defines a longitudinal axis and has a top surface and a bottom surface. The plate member further defines an elongated hole extending between the top surface and the bottom surface with a width in a direction generally perpendicular to the elongated axis and a length with a greater dimension in a direction generally parallel to the elongated axis. The elongated hole is defined by a sidewall having a spherical cross section in the direction generally perpendicular to the elongated axis. The sidewall has a threading. The first bone screw has a threaded and spherical head for threadably engaging the elongated hole. The threading extends completely around the sidewall of the elongated hole such that the first bone screw may threadably engage the elongated hole anywhere along the length.

Abstract: Frame assembly for external fixation device and associated method. The frame assembly includes a first arc segment and a second arc segment. The first arc segment is for interconnection to a first bone portion. The second arc segment is for interconnection to a second bone portion. The first arc segment is coupled to the second arc segment for controlled relative rotation.

Abstract: An external fixation device includes a frame assembly having a first arc segment and a second arc segment. The first arc segment is for interconnection to a first bone portion. The second arc segment is for interconnection to a second bone portion. The first arc segment is coupled to the second arc segment for relative rotation. The external fixation assembly additionally includes an articulating module. The articulating module includes a central member, a first pivot segment and a second pivot segment. The first pivot segment is coupled to the central member for driven rotation about a first pivot axis. The second pivot segment is coupled to the central member for driven rotation about a second pivot axis. The second pivot axis is substantially perpendicular to the first pivot axis.