Abstract: A fixation device comprising a shaft extending from a leading end to a trailing end, an aperture being eccentric from a centre of the trailing end, and, a channel extending from the aperture and along at least a portion of an external surface of the body toward the leading end, the aperture and channel being aligned to form a passage.

Abstract: The present disclosure relates to a bone fixation system for orthopaedic surgery. In one form, the system comprises a screw and a plate, the plate comprising at least one through opening, the through opening comprising a screw inlet, and a through bore which tapers inwardly as it extends through the plate from the screw inlet, the plate further comprising a plurality of splines which further define the through opening by projecting into the through bore, each spline extending longitudinally through the through opening, and comprising a top land which extends from the screw inlet and along the spline, and wherein in use, at least a portion of a head of the screw will engage with the top lands of the splines. A plate for a bone fixation system is also disclosed.

Abstract: A bone fixation element (100) for fixing a bone fixation plate (200) to a bone (5) is disclosed. The bone fixation element (100) includes a shank (140) receivable into the bone (5) and a head (120) securable to the bone fixation plate (200). The head (120) has an external locking thread (160) including a first thread section (166) adapted to progressively deform a portion of a hole (220) in the bone fixation plate (200) as the head (120) of the bone fixation element (100) is inserted into the hole (220). The external locking thread (160) further includes a second substantially parallel thread section (164) adapted to engage with a portion of the hole (220) deformed by the first thread section (166) to thereby secure the head (120) of the bone fixation element (100) to the bone fixation plate (200). The bone fixation element (100) may be a variable angle locking screw.

Abstract: The invention provides a tool jig (50) for use with a bone plate (10) having one or more fixing element apertures (20), wherein the tool jig (50) guides placement of a drill sleeve (34) to enable the drill sleeve (34) to be attached to a fixing element aperture (20), the tool jig (50) comprising a body (52), a securing means (80) on the body adapted to releasably secure the tool jig (50) to the bone plate (10) such that the tool jig (50) can be firstly secured in position to the bone plate (10) and secondly removed, and one or more tool jig apertures (54) defined in the body (52) wherein an at least one or all tool jig apertures (54) are adapted to be substantially aligned with an at least one or all fixing element apertures (20); wherein, in use, the tool jig aperture (54) guides the drill sleeve (34) so that the longitudinal axis of the drill sleeve (34) substantially aligns with the axis of the fixing element aperture (20) prior to attaching the drill sleeve (34) to the fixing element aperture (20).