STUDY DESIGN We introduce a simple free hand technique with great ease of application, without angles, measures or degrees, and without any fluoroscopic guidance. It is a safe and reproducible technique. We present our preliminary experience with the use this technique, with inimitable simplicity. PURPOSE The primary aim of the procedure was to achieve adequate screw trajectory in an apparent...

Perhaps the most famous equation in science is E = mc2; it also represents one of the best-known scientific insights. But why does Einstein’s equation about the conservation of energy enjoy such popularity? Is it because it is easily and instinctively understood, or because it is widely taught in schools? I doubt that either explanation is true; rather, its appeal is its elegant simplicity with...

Case is defined by the positive values [+H(ighest) R(ole)], [+L(owest) R(ole)], which are assigned to the Th-roles according to their relative position on the Th-role hierarchy (itself a projection of semantic form). (25) a. [+HR] is assigned to the highest role. b. [+LR] is assigned to the lowest role. Our notion of abstract Case resembles GB’s in that it is a syntactically assigned feature co...