2.5HA
4.0HB full
2.7 HA
2.0HA
Standard cortical screws are used for diaphyseal bones, with a symmetrical head (3.5 + 4.5) and asymmetrical threads. Standard cancellous bone screws are used for metaphysis or epiphysis, with large outer diameter and deep thread. Lag screw technology has two mechanical components: 1 the circumferential force (friction force) along the thread, 2 the axial force when tightening, the screw screw or sliding hole allows the contralateral fracture block to be pulled toward the screw head.4.0 HB half
3.5HA
4.5HA
6.5HB Full
6.5HB Half