Compact orthopedic anti-rotation device

A method of immobilizing and securing adjacent bones and preventing such bones from relative rotation, to facilitate healing of the bones or tissue or ligaments connected thereto, the method comprising:

• positioning a first bone and a second, adjacent bone at desired locations relative to each other;
• inserting a first anchor of a compact anti-rotation device through a first outer surface of a first bone and into the first bone to create a first plurality of holes, the first anchor having a first plurality of prongs;
• and
• inserting a second anchor of the compact anti-rotation device through a second outer surface of a second bone and into the second bone to create a second plurality of holes, wherein the compact anti-rotation device having a torsion bar extending between the first anchor and the second anchor, wherein the set of multiple prongs are positioned in one or more patterns concentric to a point on the longitudinal axis of the torsion bar, wherein the torsion bar has a substantially linear shape, wherein the torsion bar is elongate.