A device for implanting a bone fixation system comprises an insertion instrument extending from a proximal end to a distal end, the distal end having an engagement portion for removably engaging a proximal end of a bone plate, the insertion instrument having an elongated channel extending therethrough to permit insertion of a first protection sleeve therethrough, wherein a longitudinal axis of the elongated channel is coaxial with a longitudinal axis of a first opening extending through the bone plate and a first protection sleeve insertable into the elongated channel and guiding insertion of an anti-rotation screw therethrough and through the bone plate, a longitudinal axis of the first protection sleeve being angled with respect to the longitudinal axis of the elongated channel.一種用於植入骨固定系統的裝置包括:插入器械,所述插入器械從近端延伸至遠端,所述遠端具有用以可移除地接合骨板近端的接合部分,插入器械具有延伸穿過其中的細長通道,以允許第一保護套穿過其中插入,其中細長通道的縱向軸線與延伸穿過骨板的第一開口縱向軸線同軸;並且第一保護套可插入細長通道中並且引導反旋轉螺釘插入穿過其中並穿過骨板,第一保護套的縱向軸線相對於細長通道的縱向軸向成角度。100...骨固定系統102...骨板104...第一部分106...第二部分108...鎖定孔110...鎖定孔軸線116...遠端118...通道130...軸134...遠端146...遠端開口10...骨固定元件12...軸14...頭部20...反旋轉螺釘22...軸
