Abstract: A fixation system for spinal instrumentation comprising a cap (1), which houses the head of a screw (2), the end of said screw (2) projecting through a lower opening of said cap (1). A coupling element (3) having two tabs (33) on both side ends rests on the upper part of the head of said screw (2). Said coupling element (3) houses therein an adjusting ring (4) secured to a series of tabs (7), by which means the movement of the head of said screw (2) can be limited.

Abstract: A fixation system for spinal instrumentation comprising a cap (1), which houses the head of a screw (2), the end of said screw (2) projecting through a lower opening of said cap (1). A coupling element (3) having two tabs (33) on both side ends rests on the upper part of the head of said screw (2). Said coupling element (3) houses therein an adjusting ring (4) secured to a series of tabs (7), by which means the movement of the head of said screw (2) can be limited.

Abstract: A three-dimensional correction of the curvatures of the spine, for reducing spinal deformities, such as scoliosis, uses a pair of pedicle screws placed on each of the spinal vertebrae of the spine to be corrected, in combination with alignment elongated members or extenders temporally fixed by a proximate portion and associated with corrective rods engaged with the extenders, running along a transverse plane. Each of the corrective rods provides implant rods.

Abstract: The present invention provides a simplified spine curvatures correction system for reducing spinal deformities, using a bone anchoring element, such as pedicle screw, placed on each of the spinal vertebrae of the spine to be corrected, in combination with alignment elongated members or extenders pivotally connected in a single plane direction to said anchoring element and associated with corrective rods engaged with said extenders, running along a transverse plan, said corrective rods providing implant rods.

Abstract: A three-dimensional correction of the curvatures of the spine, for reducing spinal deformities, such as scoliosis, uses a pair of pedicle screws placed on each of the spinal vertebrae of the spine to be corrected, in combination with alignment elongated members or extenders temporally fixed by a proximate portion and associated with corrective rods engaged with the extenders, running along a transverse plane. Each of the corrective rods provides implant rods.