Abstract: A screw cap removably associated with a bone screw, the bone screw comprising: a head having a set of interior threads, one of the set of interior threads having a circular slot; a magnet; and an interior cavity located within the bone screw and configured to house the magnet; the screw cap comprising: a top end configured to receive a driving means for inserting the screw cap into, and removing the screw cap from, the head; a body having a set of cap threads, one of the set of cap threads comprising a locking bead; and an annular recess concentrically lining a portion of the body, the annular recess comprising a leakage ring for establishing a seal between the screw cap and the head; wherein an association of the set of cap threads with the set of interior threads causes the locking bead to be engaged with the circular slot.

Abstract: A system for correcting scoliosis, the system comprising: a bone screw configured to be screwed into a bone having: an exterior casing; a head having interior threads; a distalmost tip configured to be driven into the bone; a shaft extending between the head and the tip, the shaft having exterior threads; a magnetic ball; an interior cavity within the bone screw configured to house the magnetic ball; a cap having: a top end having a recess configured to receive a means for driving the bone screw into the bone; and a bottom end having cap threads; wherein an association of the cap threads with the interior threads causes the cap to be sealed to the head, and thus causes the magnetic ball to be fully encased within the bone screw, such that no portion of the magnetic ball is exposed outside of the exterior casing; and a correction abacus.

Abstract: A screw cap removably associated with a bone screw, the bone screw comprising: a head having a set of interior threads, one of the set of interior threads having a circular slot; a magnet; and an interior cavity located within the bone screw and configured to house the magnet; the screw cap comprising: a top end configured to receive a driving means for inserting the screw cap into, and removing the screw cap from, the head; a body having a set of cap threads, one of the set of cap threads comprising a locking bead; and an annular recess concentrically lining a portion of the body, the annular recess comprising a leakage ring for establishing a seal between the screw cap and the head; wherein an association of the set of cap threads with the set of interior threads causes the locking bead to be engaged with the circular slot.

Abstract: A system for correcting scoliosis, the system comprising: a bone screw configured to be screwed into a bone having: an exterior casing; a head having interior threads; a distalmost tip configured to be driven into the bone; a shaft extending between the head and the tip, the shaft having exterior threads; a magnetic ball; an interior cavity within the bone screw configured to house the magnetic ball; a cap having: a top end having a recess configured to receive a means for driving the bone screw into the bone; and a bottom end having cap threads; wherein an association of the cap threads with the interior threads causes the cap to be sealed to the head, and thus causes the magnetic ball to be fully encased within the bone screw, such that no portion of the magnetic ball is exposed outside of the exterior casing; and a correction abacus.

Abstract: A bone screw configured to be screwed into a bone having: an exterior casing; a head having a head interior surface; a tip configured to be driven into the bone; a shaft extending between the head and the tip, the shaft having exterior threads; a magnet; an interior cavity within the bone screw configured to house the magnet; a cap having: a top end having a recess configured to receive a means for driving the bone screw into the bone; and a bottom end having cap threads; the head being configured to receive the cap by having interior threads on the head interior surface; wherein an association of the cap threads with the interior threads causes the cap to be sealed to the head, and thus causes the magnet to be encased within the bone screw with no portion of the magnet exposed outside of the exterior casing.

Abstract: A bone screw configured to be screwed into a bone having: an exterior casing; a head having a head interior surface; a tip configured to be driven into the bone; a shaft extending between the head and the tip, the shaft having exterior threads; a magnet; an interior cavity within the bone screw configured to house the magnet; a cap having: a top end having a recess configured to receive a means for driving the bone screw into the bone; and a bottom end having cap threads; the head being configured to receive the cap by having interior threads on the head interior surface; wherein an association of the cap threads with the interior threads causes the cap to be sealed to the head, and thus causes the magnet to be encased within the bone screw with no portion of the magnet exposed outside of the exterior casing.