Biased angulation bone fixation assembly

摘要

A bone fixation assembly including a coupling element 12 having a first bore 40 coaxial with a first longitudinal axis 22, and a second bore 41 coaxial with a second longitudinal axis 24 that is transverse to the first longitudinal axis 22. 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.