scholarly journals Extramedullary Tibial Bone Cutting Using Medial Cortical Line in Total Knee Arthroplasty

2017 ◽  
Vol 29 (3) ◽  
pp. 189-194
Author(s):  
Ju-Hyung Yoo ◽  
Chang-Dong Han ◽  
Hyun-Cheol Oh ◽  
Sang-Hoon Park ◽  
Se-Han Jung ◽  
...  
Author(s):  
Masanori Tsubosaka ◽  
Tomoyuki Kamenaga ◽  
Yuichi Kuroda ◽  
Koji Takayama ◽  
Shingo Hashimoto ◽  
...  

AbstractSeveral studies have reported better clinical outcomes following kinematically aligned total knee arthroplasty (KA-TKA) than mechanically aligned TKA. Consistent reproduction of a KA-TKA is aided by accurate tibial bone resections using computer navigation systems. This study compares an accelerometer-based portable navigation system with a conventional navigation system on tibial bone resection and clinical outcomes in KA-TKA. This study included 60 knees of patients who underwent primary KA-TKA between May 2015 and September 2017. They were randomly assigned to the OrthoPilot and iASSIST groups. A tibial bone cut was performed with 3 degree varus and 7 degree posterior slope in relation to the mechanical axis in all cases. The tibial component angle (TCA) and posterior slope angle (PSA) were evaluated by postoperative radiography, and those that deviated more than 2 degree were set as outliers. The clinical outcomes were the knee range of motion (ROM) and 2011 Knee Society Score (KSS) evaluated at 1 year postoperation. The groups were compared in terms of the TCA, PSA, number of outliers, ROM, and 2011 KSS (p < 0.05). No significant difference was observed between the groups in terms of the mean TCA, PSA, number of outliers, ROM, and categories of the 2011 KSS (objective knee indicators, symptoms, satisfaction, expectations, and functional activities). Although tibial bone cuts were performed with 3 degree varus and 7 degree posterior slope, no significant difference was observed between the OrthoPilot and iASSIST groups in terms of the accuracy of cuts or postoperative clinical result. The iASSIST was found to be a simple and useful navigation system for KA-TKA.


2018 ◽  
Vol 27 (4) ◽  
pp. 1270-1279 ◽  
Author(s):  
ShiZhong Gu ◽  
Shinichi Kuriyama ◽  
Shinichiro Nakamura ◽  
Kohei Nishitani ◽  
Hiromu Ito ◽  
...  

The Knee ◽  
2016 ◽  
Vol 23 (4) ◽  
pp. 725-729 ◽  
Author(s):  
Maki Itokazu ◽  
Yukihide Minoda ◽  
Mitsuhiko Ikebuchi ◽  
Shigekazu Mizokawa ◽  
Yoichi Ohta ◽  
...  

2012 ◽  
Vol 24 (3) ◽  
pp. 146-150 ◽  
Author(s):  
Shin Woo Nam ◽  
Ji Hoon Kwak ◽  
Nam Ki Kim ◽  
Il Whan Wang ◽  
Beom Koo Lee

2018 ◽  
Vol 32 (09) ◽  
pp. 886-890
Author(s):  
Thomas Wetzels ◽  
Joost van Erp ◽  
Reinoud W. Brouwer ◽  
Sjoerd K. Bulstra ◽  
Jos J. A. M. van Raay

AbstractAseptic loosening remains to be a major reason for revision in total knee arthroplasty. Cement penetration of 2 to 5 mm increases the interface strength and consequently decreases the likelihood of loosening. But despite this overall accepted optimal cement penetration, there is still a wide variety of cementing techniques used in total knee arthroplasty. The purpose of this study was to evaluate two cementing techniques on the tibial and femoral sides, with regard to cement penetration. Five paired cadaveric knees were used. A total knee arthroplasty was placed according to standard practice, with a setup that mimics the clinical practice. On the tibial side, we compared the application of cement to the bone surface alone, to the application of cement to both the bone surface and the component. On the femoral side, we compared the application of cement to the posterior condyles of the component and to the anterior and distal parts of the bone surface, to the application of cement to the component alone. After the cement had cured, the arthroplasty was removed and the bone was examined to determine the cement penetration using digital software. When applying cement to both the tibial bone surface and the tibial component, the cement penetration increased compared with applying cement to the tibial bone surface alone (3.46 vs. 2.66 mm, p = 0.007). With regard to the distal femoral cuts, the cement penetration did not vary when applied to either the bone or the component (2.81 vs. 2.91 mm). But applying it to the anterior bone surface did seem preferable, when compared with only applying it to the component. The average cement penetration did not differ, but applying the cement to the bone did enlarge the total length of the cement distribution (2.48 vs. 0.96 mm, p = 0.011). Almost no cement was detected on the posterior surface of the femoral cut. We concluded that applying cement to both the tibial bone surface and the component improves cement penetration.


1994 ◽  
Vol 43 (2) ◽  
pp. 565-570
Author(s):  
Masahiko Matsumoto ◽  
Takehiko Torisu ◽  
Masahiko Nakamura ◽  
Yuzo Tanaka ◽  
Shogo Masumi

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