Sigma Surgical Pvt Ltd offers Cancellous Screw. Sigma Surgical Pvt Ltd is an ISO 9001: 2000 certified company. Cancellous Screw has a length of 25.0 mm to 110.0 mm. The Cancellous Screw comes with 5 mm length variation. Variation: 6.5 mm Cancellous screw, 16 mm thread. They are used for Orthopedic Implanting in hospitals and nursing homes.