Department of Clinical-Surgical Sciences, Diagnostics and Pediatrics, Operative Unit of Orthopaedics and Traumatology, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Via Golgi, 19, 27100, Pavia, Italy.
SICOT Fellow at Department of Clinical-Surgical Sciences, Diagnostics and Pediatrics, Operative Unit of Orthopaedics and Traumatology, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy.
Int Orthop. 2019 May;43(5):1113-1121. doi: 10.1007/s00264-018-4095-4. Epub 2018 Aug 21.
The objectives of this study were to determine the radiological outcome of a new personalized total knee arthroplasty (TKA) design and also to analyze the radiological reproducibility of the surgical technique.
A total of 100 consecutive TKAs performed in 99 patients using Persona knee system were recruited. Weight-bearing standing anteroposterior and lateral radiographs were done in all the patients, both pre-operatively as well as post-operatively, and various radiological parameters were analyzed and compared.
The full correction of the limb mechanical axis was achieved in 97% of patients, and the radiological parameters of coronal and sagittal alignment of femoral and tibial components showed good results. There were no substantial differences between the mean pre-operative and post-operative patellar height indices, and data were in the normal range. Posterior condylar offset (PCO) and posterior condylar offset ratio (PCOR) had increased as expected after TKA. The coverage of tibia was optimal with data in the normal range.
Radiological assessment of the new personalized knee system design showed excellent results with various parameters restored to the normal values. Therefore, the prosthesis can be considered anatomic, and the surgical technique is reproducible allowing the prosthesis to be implanted easily and with high precision.
本研究的目的是确定一种新型个性化全膝关节置换术（TKA）设计的放射学结果，并分析手术技术的放射学可重复性。
共纳入 99 例患者的 100 例连续 TKA，均使用 Persona 膝关节系统进行。所有患者均行负重位站立前后位和侧位 X 线检查，包括术前和术后，并对各种放射学参数进行分析和比较。
97%的患者实现了肢体机械轴的完全矫正，股骨和胫骨组件的冠状和矢状对线的放射学参数显示出良好的结果。平均术前和术后髌骨高度指数无明显差异，数据均在正常范围内。TKA 后后髁偏心距（PCO）和后髁偏心距比（PCOR）如预期那样增加。胫骨覆盖最佳，数据在正常范围内。
新型个性化膝关节系统设计的放射学评估显示出优异的结果，各项参数均恢复至正常值。因此，该假体可被认为是解剖型的，手术技术具有可重复性，可实现假体的精准植入。
