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Cannulated Headless Full Threaded Screw
CHFS
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Cannulated Headless Full Threaded Screw CHFS. 2.8 Micro, 3.6 Mini, and 4.1 Standard, 4.7 X-Standard, 5.0 Large, 7.5 X-Large Compression CHFS screws can be used for a wide range of indications in the upper and lower extremities. They are intended for repairing intra-articular and extraarticular fractures and nonunions of small bones and small bone fragments, arthrodesis, and osteotomies. The variable-stepped thread pitch, headless design provides compression, and allows for simplified insertion. Using these screws, surgeons can now achieve zero-profile stable fixation.
▲Continuously Variable : The fully threaded continuously variable thread pitch screw design provides greater compression and a larger window of compression compared to partially threaded Herbert-style screw designs
▲Fully Threaded Length : Biomechanical studies have shown that fully threaded screws better handle cyclic loading compared to AO and Herbert screws
▲Cutting Flutes : These flutes are engineered to make the screw self - tapping and facilitate insertion into hard bone
▲Continuously variable thread maximizes cancellous bone purchase since each thread cuts into new bone providing multiple points of fixation
▲Hexalobe (stardrive) design provides additional stability and torque transfer in all the screw sizes
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