DTRX Orthopedic Implants
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A Cannulated Headless Compression Screw (CHCS) is a specialized orthopedic implant used primarily for fracture fixation, such as scaphoid fractures. The screw is designed to generate significant compression across the fracture site and is countersunk below the articular surface to minimize interference with surrounding soft tissues and joint movement.
Make a small incision (1-3 cm) near the fracture site, avoiding major nerves and vessels. Gently separate muscles and fascia layer by layer to fully expose the fracture end.
Utilize manual traction, rotation, and lifting to restore anatomical position. Continuously monitor alignment using C-arm fluoroscopy for precision.
Insert the guide wire under fluoroscopic guidance along the designed direction. The wire should be perpendicular to the fracture plane for optimal stability.
Measure the required length using a dedicated measuring device over the guide wire. Ensure the tip is firmly against the bone for accuracy.
Select an appropriate cannulated drill bit. Drill along the guide wire while using irrigation solution to prevent thermal injury to the bone tissue.
Mount the screw onto the compression sleeve and advance it over the guide wire. Turning the sleeve closes the fracture gap. Finalize by advancing the screw head until it is flush with the bone surface.
