Résumé
La décompression antérieure a été réalisée chez 41 patients porteurs de métastases du corps vertébral. Les complications neurologiques étaient patentes chez 36 patients et latentes chez 5 d'entre eux. On a utilisé pour la reconstruction un cylindre de titane, mis en place après la corporectomie et renforcé par une plaque antérieure. L'implant en titane peut être facilement adapté à la longueur nécessaire sans nécessiter de matériel supplémentaire et onéreux. L'implant est rempli de PMMA avant sa mise en place, ce qui facilite la transfixation nécessaire au verrouillage de la rotation. La mortalité à 30 jours est de 9.7%. La douleur a disparu dans 38 cas sur 41 (92.7%), l'amélioration motrice a été manifeste dans 31 cas sur 35 (88.6%), 6 patients ne présentaient aucun symptôme neurologique ni avant ni après l'opération. Une dégradation neurologique n'a été relevée que dans 1 cas (2.4%). L'efficacité du geste chirurgical a été maintenue jusqu'au décès des patients. Bien que la récidive tumorale à un autre niveau rachidien ait conduit à une chirurgie itérative chez 5 patients, aucun déplacement d'implant n'est survenu durant la période d'observation (recul maximum 44 mois), cela témoignant du caractère mécaniquement faible et sûr du procédé utilisé.
Summary
Anterior decompression in spinal metastases of the corporal type with impending (n=5) or present (n=36) neurological complications was performed in 41 patients. For reconstruction, a titanium cylinder was inserted after spondylectomy and augmented with an anterior plate. The titanium implant can easily be adjusted to the length needed without necessitating expensive additional equipment. Outside the patient the implant is filled with polymethylmetacrylate, facilitating plate transfixation for rotational locking. There was a 30-day mortality of 9.7%. Pain relief was apparent in 38 of 41 patients (92.7%), and motor improvement was manifest in 31 of 35 cases (88.6%). Six patients did not present with any neurological symptoms pre- or postoperatively. Neurological deterioration was registered in only 1 case (2.4%). Surgical efficacy was maintained until the death of the patients. Though tumor recurrence at a different spinal level led to consecutive surgery in 5 patients, no implant dislocation occurred during the observation period (maximum 44 months), characterizing the procedure as a mechanically reliable and safe technique.
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Hertlein, H., Mittlmeier, T., Piltz, S. et al. Spinal stabilization for patients with metastatic lesions of the spine using a titanium spacer. Eur Spine J 1, 131–136 (1992). https://doi.org/10.1007/BF00300940
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DOI: https://doi.org/10.1007/BF00300940