Cannulated screws have a hollow central shaft. Both cancellous & cortical screws can be cannulated. They can be inserted over a guide wire or guide pin. Cannulated cancellous screws are used for metaphyseal fractures while cannulated & non-cannulated cortical screws are used as lag screws for fixation of diaphyseal fracture.
GPC is the best Indian name, known internationally for manufacturing Orthopaedic Implants & Instruments. Manufactured in accordance with the international quality standards, our screws are used by orthopedic surgeons across the globe. Our Bone Screws are US FDA 510 (k) approved. We offer Cannulated Cancellous Screws in Stainless Steel as well as in Titanium available in various sizes.
Visit here for Cannulated Screws [http://bit.ly/1hFrE1m]