Acta chirurgiae orthopaedicae
et traumatologiae Čechoslovaca

Acta Chir Orthop Traumatol Cech. 2013; 80(1):89-91 | DOI: 10.55095/achot2013/014

Alternativní technika cementové augmentace uvolněných pedikulárních šroubů - technická poznámka a prezentace dvou případůKazuistika

T. Kocak^*, M. Däxle, H. Reichel, F. Lattig

Department of Orthopaedic Surgery, University of Ulm, Germany

An alternative cement augmentation technique for pedicle screws is described, which was applied in two patients with mono- and bisegmental non-union after preceding multisegmental lumbar fusion. The correctly placed pedicle screws in S1 with diameters of 6 and 8.5 mm had severely enlarged the screw cavities due to segmental instability. Revision screws with 10 mm diameter demonstrated sufficient purchase only on the left side. Therefore, cement augmentation was performed for the right sided screws. After verification of intact pedicle borders, the cavity was filled up with PMMA bone cement. Afterwards, a Kirschner wire was positioned centrally, the hardening of the cement was awaited, the cement was gradually drilled and the screw was placed. In both patients, sufficient purchase of the cemented pedicle screws was documented. Screw insertion after awaiting the hardening of the bone cement in pedicles and vertebral bodies with huge defect situations seems to be an alternative to previous cement augmentation techniques of pedicle screws with the advantage, that the screws could be more easily unscrewed, if necessary.

Klíčová slova: bone cement, augmentation, pedicle screws, revision, spondylodesis

Zveřejněno: 1. únor 2013  Zobrazit citaci