Total intervertebral prosthesis for replacing e.g. totally/partially resected intervertebral disk, has pivoting unit positioned between vertebrae to ensure movement around prosthetic core centered around point

摘要

The prosthesis (1) has an articular connection unit comprising upper elements (2, 3) and lower elements (4, 5) integrated to superjacent and subjacent vertebrae for ensuring circular displacement of the vertebrae in horizontal and sagittal planes centered around a point. The point is located between the vertebrae. An articular pivoting unit is cooperated with the connection units. The pivoting unit is positioned between the vertebrae to ensure movement around a prosthetic core (6) centered on the point, where the prosthetic core includes a spherical profile.