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MINERVA ORTOPEDICA E TRAUMATOLOGICA
A Journal on Orthopedics and Traumatology
Minerva Ortopedica e Traumatologica 2007 August;58(4):291-5
Tantalum tibial plate in the NexGen total knee arthroplasty: short term results and osteointegration
Damilano M., Fiammengo M., Lancione V., Caresio M., Indemini E.
Divisione di Ortopedia e Traumatologia Ospedale Maggiore, Chieri, Torino
Aim. The aim of this study was to provide a clinical and X-ray review of the NexGen tantalum tibial plate prosthesis which have been implanted from 2004 to 2007 evaluating the short term osteointegration of the tantalum surface.
Methods. We considered a total of 15 prosthesis implanted in 14 patients (1 bilateral implantation). In 100% of cases, primary gonarthritis was the original pathology leading to surgery. For the clinical evaluation we used the Hospital for Special Surgery (HSS) knee score; for the X-ray evaluation we used the Knee Society TKA Roentgenographic evaluation and scoring system.
Results. The average HSS score at control was 93.4 (OS±7.6). The difference between the preoperative and at control score was about 26.9 scores. At check up every patient was free from pain with a complete functional recovery (11.23/12 scores). Nobody was using aids. The mean preoperative articulation movement was about 93°, at check up we measured a mean flection-extension of about 115°. All the differences between preoperative and postoperative scores are statistically significant (P<0.001). To conduct our study we used the statistical program SAS (v.8, Sas Inc., North Carolina, USA). X-ray evaluation didn’t show any detached part, neither periprosthesis osteolysis nor prosthesis mobilisation. We didn’t find any periprosthesis radiolucency line greater than 1 mm and none of them showed any complication at control. During follow-up we didn’t find any major complications.
Conclusion. The optimal clinical and X-ray results, even if they are at short term, can be considered as indices of a good osteointegration and lead us to believe that the use of the tantalum tibial plate could be a good solution for young patients with a gonarthrosis disease.