Nexis Snap-Off Screw

Bone-nailing compression screw. A rod-like orthopaedic surgical instrument designed to be inserted (screwed) through the insertion handle of an orthopaedic implant aiming arm to impart a force upon a proximally inserted bone nail locking screw thus creating compression on the proximal section of a fractured bone to close the fracture gap with the distal section which can then be locked into final position. It is typically made of high-grade stainless steel and has a threaded portion at the proximal end together with a head for acceptance of a screwdriver or other tool to provide the necessary rotation. It is available in a variety of lengths and is usually used when nailing the tibia or humerus. This is a reusable device.