scholarly journals Robotic Arm-assisted UKA Improves Tibial Component Alignment: A Pilot Study

2009 ◽  
Vol 468 (1) ◽  
pp. 141-146 ◽  
Author(s):  
Jess H. Lonner ◽  
Thomas K. John ◽  
Michael A. Conditt
Keyword(s):  
Pilot Study ◽  
Tibial Component ◽  
Robotic Arm ◽  
Component Alignment ◽  
Tibial Component Alignment

DOES NAVIGATION TOTAL KNEE REPLACEMENT REALLY MAKE A DIFFERENCE?

2013 ◽  
Vol 16 (02) ◽  
pp. 1350007
Author(s):  
P. Motwani ◽  
A. Jariwala ◽  
N. Valentine
Keyword(s):  
Total Knee Replacement ◽  
Tibial Component ◽  
Sagittal Plane ◽  
Computer Navigation ◽  
Component Alignment ◽  
Tibial Component Alignment ◽  
Significant Difference ◽  
Total Knee ◽  
The Mean

Background: Computer Navigation in Total Knee Replacement (TKR) has completed more than a decade since its inception. From that time, numerous studies have been done to see its effect on the variables of surgery and its outcome. Some studies have shown that it is definitely beneficial while others have negated its superiority over conventional techniques. This is an early outcome study on the results of navigation TKR in terms of alignment and clinical outcome at three years post-operatively. Methods: In the present study, 128 patients who had undergone navigation TKR (128 TKR) between January 2006 and November 2009 were included. The navigation system used was orthoPilot®. Patients were assessed post-operatively at one and three year using knee society score (KSS) and knee function score (KFS). All patients completed one year follow-up and 55 patients completed three year follow-up. From 128 patients, 40 navigated TKR patients operated between November 2007 and 2009 and were compared with 40 patients operated by conventional TKR operated between July 2007 and December 2008. Results: The mean KSS at 1 year post-operatively was 85.60 and at 3 years was 85.87. The mean KFS at 1 year post-operatively was 69.30 and at 3 years was 68.00. There was no statistically significant difference between navigation TKR and conventional TKR in terms of anatomical femoro-tibial alignment, femoral component alignment in coronal and sagittal plane and tibial component alignment in coronal plane. However, there was statistically significant difference between tibial component alignment in sagittal plane (p = 0.000) between both the groups. Conclusion: Computer navigation TKR affords a possibility to place both the femoral and tibial component very precisely without the risk of any greater axis deviation from ideal value. It helps in reducing the outliers in alignment of the limb and that of component and that improves the overall implant survival for a long time post-operatively.

Efficacy of Portable Accelerometer-Based Navigation Devices versus Conventional Guides in Total Knee Arthroplasty: A Meta-analysis

2019 ◽  
Vol 33 (07) ◽  
pp. 691-703 ◽  
Author(s):  
Han Sun ◽  
Shuxiang Li ◽  
Kun Wang ◽  
Guofeng Wu ◽  
Jian Zhou ◽  
...  
Keyword(s):  
Tibial Component ◽  
Operative Time ◽  
Short Form ◽  
Meta Analysis ◽  
Mechanical Alignment ◽  
Knee Score ◽  
Component Alignment ◽  
Posterior Slope ◽  
Tibial Component Alignment ◽  
Total Knee

AbstractVarious studies have provided different conclusions regarding which component's alignment can be actually improved by a novel portable accelerometer-based navigation device (PAD) compared with the conventional guide (CON); the operative times and clinical outcomes reported by these studies also exhibited incongruity. Thus, this meta-analysis was conducted to evaluate the efficacy of PADs in total knee arthroplasty (TKA). The Web of Science, EMBASE, PubMed, MEDLINE, and Cochrane Library databases were systematically searched. Studies published till July 2018 and comparing PAD with CON in treatment with TKA were identified. Sixteen studies in which 1,551 TKAs were reported were included. Results showed that PAD was significantly superior to CON in reducing tibial component alignment out of ±3 degrees, femoral coronal angle out of ±3 degrees, and overall mechanical alignment out of ±3 degrees. PAD can also help obtain a more accurate result of femoral coronal angle (degree); however, it requires a longer operative time than the CON group. The two groups were comparable in tibial component alignment out of ±2 degrees, tibial component posterior slope out of ±3 degrees, tibial component posterior slope out of ±2 degrees, femoral coronal angle out of ±2 degrees, femoral sagittal angle out of ±3 degrees, femoral sagittal angle out of ±2 degrees, tibial component alignment (degree), tibial component posterior slope (degree), femoral sagittal angle (degree), overall mechanical alignment (degree), blood loss, Knee Society knee score, Knee Society function score, Oxford Knee Score, Short Form-36 physical component score, Short Form-36 mental component score, and range of motion. In conclusion, compared with CON, PAD can help improve the femoral coronal angle as well as decrease the outliers out of ±3 degrees in femoral/tibial coronal angles and overall mechanical alignment. However, PAD did not show significant advantages in tibial and femoral component sagittal angles out of ±3 degrees, various outliers of ±2 degrees, most mean values of component alignments, operative time, and various functional or satisfactory scores.

Effect of Tibial Component Alignment and Posterior Slope on Tibial Coverage in a Chinese Population: A Three-dimensional Anthropometric Study

2018 ◽  
Vol 33 (01) ◽  
pp. 053-061 ◽  
Author(s):  
Long Shao ◽  
Ting Wang ◽  
Junyi Liao ◽  
Wei Xu ◽  
Xi Liang ◽  
...  
Keyword(s):  
Tibial Component ◽  
Three Dimensional ◽  
Prosthesis Design ◽  
Tibial Tubercle ◽  
Virtual Surgery ◽  
Component Alignment ◽  
Posterior Slope ◽  
Symmetrical Design ◽  
Tibial Component Alignment ◽  
Significant Difference

AbstractThe standard for rotational alignment and posterior slope of the tibial component in total knee arthroplasty remains controversial. This study aimed to evaluate the effect of tibial component alignment and posterior slope on tibial coverage. Computer tomographic scans of 101 tibial specimens were used to reconstruct three-dimensional tibia models. A virtual surgery was performed to generate a resection plane with different posterior slopes on the proximal tibia. Symmetrical and anatomical tibial components were placed aligning to the medial one-third of tibial tubercle (Insall) and the medial edge of patella tendon (Akagi), respectively. Differences in coverage and mismatch were evaluated and statistically compared across alignments, slope angles, and genders. The tibial coverage increased from 83.21 to 85.96% for Akagi's alignments and from 85.19 to 87.22% for Insall alignments along with the increasing of posterior slope from 0 to 7 degrees. Regardless of the prosthesis design, there was a significant difference between two rotational alignments as the Insall alignment was significantly higher in tibial coverage. With a slope of 7 degrees, more overhang along with less underhang anteromedially were found in males compared with females. The current anatomical tibial design has a tendency of overhang in the anteromedial zone which does not exist in the symmetrical design. The current tibial baseplate design has better tibial coverage when aligning to the medial third of tibial tuberosity with slopes of 5 and 7 degrees. Gender difference should be taken into account and given priority for prosthesis design.

Improving tibial component alignment in total knee arthroplasty

2014 ◽  
Vol 23 (12) ◽  
pp. 3563-3570 ◽  
Author(s):  
G. Cinotti ◽  
P. Sessa ◽  
A. D’Arino ◽  
F. R. Ripani ◽  
G. Giannicola
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Tibial Component ◽  
Component Alignment ◽  
Tibial Component Alignment ◽  
Total Knee
Sign in / Sign up

Export Citation Format

Share Document