DISTRACTION PIN FOR FRACTURE FIXATION

摘要

An internal fixation pin (10) comprises first (12) and second portions (14) with threads of different diameters, but having the same pitch and thread depth. The first portion (12) includes a self-tapping tip (20). No enlarged head portion is provided to the pin at the end opposite the tip. A non-threaded shaft portion (26) is frangibly connected to the second portion (14) and is a mechanism for rotating the pin for threaded insertion into bone. A plurality of circumferentially spaced-apart longitudinal grooves (30) are provided on the second portion (14) adjacent its intersection with the shaft portion (26). After insertion of the first (12) and second portions (14) across a fracture, the shaft portion (26) is removed. The grooves (30) permit rotation of the pin for removal should removal be necessary. A driver (40) for pin removal is also provided, as well as a mill tool (60).