Biased angulation bone fixation assembly

摘要

A bone fixation assembly including a coupling element having a first bore coaxial with a first longitudinal axis, and a second bore coaxial with a second longitudinal axis that is transverse to the first longitudinal axis. The assembly includes an anchoring element assembled with the coupling element, the anchoring element having a first end for insertion into bone. The assembly provides sufficient angulation between adjacent anchoring elements securing a common orthopedic rod, and is particularly useful for assemblies mounted in spines having abnormal curvatures and in the cervicothoracic region of the spine.