SCREW FOR DEVICE FOR COAPTATION OF BONE FRAGMENTS OR PARTS USING COMPRESSION EFFECT

摘要

The invention concerns an osteosynthesis screw for a device for coaptation of bone fragments or parts using compression effect, comprising a distal portion (2) provided with a cylindrical thread, a proximal portion or head (3) provided with a conical tapped thread and an intermediate smooth section (4) arranged between said distal (2) and proximal (3) portions. The invention is characterized in that said intermediate smooth section (4) consists of a series of mutually tangent circular smooth surfaces (S1, S2, S3).