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Fig. 4 | BMC Musculoskeletal Disorders

Fig. 4

From: Comparison between minimally invasive, percutaneous osteosynthesis and locking plate osteosynthesis in 3-and 4-part proximal humerus fractures

Fig. 4

The Humerusblock implant and instruments.a shows Kirschner-wire centering sleeve with two 2.5 mm Kirschner wires. Insertion guide and drill sleeve for Humerusblock. ■ Humerusblock with two offset canals for the Kirschner wires and two headless pins for locking the Kirschner wires in the Humerusblock. ° 3.5 mm self-tapping cortex screw to fix the Humerusblock to the lateral aspect of the humeral bone. ^Special screw driver for Humerusblock to fix the headless pins.b shows Humerusblock insertion guide together with Kirschner-wire centering sleeve and two 2.5 mm Kirschner wires. c shows Humerusblock insertion guide, Kirschner-wire centering sleeve and Kirschner wires from lateral. d Kirschner wires crossing over at an angle of 25° through the Humerusblock

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