scholarly journals Effects of computer-assisted navigation versus the conventional technique for total knee arthroplasty on levels of plasma thrombotic markers: a prospective study

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Ka-Kit Siu ◽  
Kwan-Ting Wu ◽  
Jih-Yang Ko ◽  
Feng-Sheng Wang ◽  
Wen-Yi Chou ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Conventional Technique ◽  
Conventional Group ◽  
Computer Assisted ◽  
Inclusion Criteria ◽  
Lower Plasma ◽  
Assisted Navigation ◽  
Total Knee ◽  
A Prospective Study

Abstract Background Venous thromboembolism (VTE) is a major sequela after total knee arthroplasty (TKA). We prospectively compared the differences in the perioperative plasma d-dimer and fibrinogen levels between the individuals undergoing TKA via computer-assisted navigation and via a conventional method as the surrogate comparison for VTE. There were 174 patients fulfilling the inclusion criteria and providing valid informed consent between September 2011 and November 2013. There were 69 females and 20 males in the navigation-assisted group (median age: 71.00 years), while the conventional group was composed of 59 females and 26 males (median age: 69.00 years). Blood samples were obtained prior to and at 24 and 72 h after surgery for measurement of the levels of plasma d-dimer and fibrinogen. Results A significantly lower plasma d-dimer level 24 h after TKA (p = 0.001) and a milder postoperative surge 24 h after TKA (p = 0.002) were observed in patients undergoing navigation-assisted TKA. The proportions of subjects exceeding the plasma d-dimer cut-off values of 7.5, 8.6 and 10 mg/L 24 h after TKA were all significantly higher in the conventional group than in the navigation-assisted group (p = 0.024, 0.004, and 0.004, respectively). Conclusions A lower plasma d-dimer level and a milder surge in the plasma d-dimer level were observed in patients undergoing navigation-assisted TKA in comparison with patients undergoing conventional TKA 24 h after surgery. These findings may supplement the known advantages of navigation-assisted TKA.

scholarly journals Comparison of Total Knee Arthroplasty Using Computer-Assisted Navigation versus Conventional Guiding Systems: A Prospective Study

2009 ◽  
Vol 17 (2) ◽  
pp. 170-173 ◽  
Author(s):  
CH Pang ◽  
WL Chan ◽  
CH Yen ◽  
SC Cheng ◽  
SB Woo ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Mechanical Axis ◽  
Varus Deformity ◽  
Osteoarthritis Of The Knee ◽  
Computer Assisted ◽  
Assisted Navigation ◽  
Alignment Correction ◽  
Total Knee ◽  
A Prospective Study

Purpose. To compare knee alignments in total knee arthroplasty (TKA) using computer-assisted navigation versus conventional guiding systems. Methods. Five men and 49 women aged 49 to 79 years underwent TKA for primary osteoarthritis of the knee with varus deformity. All valgus knees were associated with inflammatory arthritis and thus excluded. Computer-assisted navigation was used for the first 35 TKAs, whereas conventional extramedullary tibial and intramedullary femoral guiding systems were used for the next 35 TKAs. The mechanical axis, coronal tibial and femoral angles, sagittal tibial and femoral angles in the 2 groups were compared. Results. Sagittal tibial and femoral angles aligned more optimally in TKAs using computer-assisted navigation. In the respective computer-assisted navigation and conventional guiding systems, 33 (94%) and 26 (74%) of the TKAs attained a postoperative mechanical axis of <3° varus/valgus. Conclusion. Computer-assisted navigation gives a more consistent alignment correction and reduces outliers during implant positioning.

scholarly journals Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty

2021 ◽  
Vol 15 (1) ◽  
pp. 79-84
Author(s):  
Leelasestaporn C ◽  
Thuwapitchayanant M ◽  
Sirithanapipat P ◽  
Sa-ngasoongsong P ◽  
Ruengsilsuwit P
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Rotational Alignment ◽  
Computer Assisted ◽  
Assisted Navigation ◽  
Total Knee

scholarly journals Accuracy of femoral rotational alignment in total knee arthroplasty using computer assisted navigation

2008 ◽  
Vol 13 (3) ◽  
pp. 167-172 ◽  
Author(s):  
Camilo Restrepo ◽  
William J. Hozack ◽  
Fabio Orozco ◽  
Javad Parvizi
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Rotational Alignment ◽  
Computer Assisted ◽  
Assisted Navigation ◽  
Total Knee

CT-Free Computer-Assisted Total Knee Arthroplasty Versus the Conventional Technique: Radiographic Results of 100 Cases

Orthopedics ◽  
2004 ◽  
Vol 27 (5) ◽  
pp. 476-480 ◽  
Author(s):  
Holger Bäthis ◽  
Lars Perlick ◽  
Markus Tingart ◽  
Christian Lüring ◽  
Joachim Grifka
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Conventional Technique ◽  
Computer Assisted ◽  
Total Knee

scholarly journals Robot-Assisted Navigation versus Computer-Assisted Navigation in Primary Total Knee Arthroplasty: Efficiency and Accuracy

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Tanner C. Clark ◽  
Frank H. Schmidt
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Primary Total Knee Arthroplasty ◽  
Secondary Outcome ◽  
Computer Assisted ◽  
Robot Assisted ◽  
Tourniquet Time ◽  
Assisted Navigation ◽  
Total Knee ◽  
Primary Total Knee

Background. Since the introduction of robot-assisted navigation in primary total knee arthroplasty (TKA), there has been little research conducted examining the efficiency and accuracy of the system compared to computer-assisted navigation systems. Objective. To compare the efficiency and accuracy of Praxim robot-assisted navigation (RAN) and Stryker computer-assisted navigation (CAN) in primary TKA. Methods. This was a retrospective study consisting of 52 patients who underwent primary TKA utilizing RAN and 29 patients utilizing CAN. The primary outcome measure was navigation time. Secondary outcome measures included intraoperative final mechanical axis alignment, intraoperative robot-assisted bone cut accuracy, tourniquet time, and hospitalization length. Results. RAN navigation times were, on average, 9.0 minutes shorter compared to CAN after adjustment. The average absolute intraoperative malalignment was 0.5° less in the RAN procedures compared to the CAN procedures after adjustment. Patients in the RAN group tended to be discharged 0.6 days earlier compared to patients in the CAN group after adjustment. Conclusions. Among patients undergoing TKA, there was decreased navigation time, decreased final malalignment, and decreased hospitalization length associated with the use of RAN when compared to CAN independent of age, BMI, and pre-replacement alignment.

Ligament balancing in computer-assisted total knee arthroplasty: Improved clinical results with a spring-loaded tensioning device

2007 ◽  
Vol 221 (7) ◽  
pp. 755-761 ◽  
Author(s):  
M Swank ◽  
J R Romanowski ◽  
L L Korbee ◽  
S Bignozzi
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Clinical Results ◽  
Computer Assisted ◽  
Knee Ligament ◽  
Assisted Navigation ◽  
Knee Mechanics ◽  
Computer Assistance ◽  
Significant Difference ◽  
Total Knee

Total knee arthroplasty (TKA) remains one of the most successful procedures in orthopaedic surgery. Complications certainly exist and are often related to failure of knee ligament balance. This asymmetry subsequently leads to component mal-alignment and loosening often secondary to deviation of the lower extremity mechanical axis. Understanding knee mechanics is essential, and recent technological advances have begun to minimize postoperative problems. A tensioning device that respects the native patellofemoral anatomy as well as the natural ligamentous strains has been developed. The surgical integration of computer-assisted navigation has allowed for enhanced accuracy and subsequently better results. The purpose of the current paper is to discuss the evolution of an improved ligament tensioning device, in the setting of classic mechanical guidance versus computer assistance and its postoperative impact on total knee outcomes in terms of manipulation rates and two-year radiographic alignment data. Based on a single surgeon series, mechanically guided arthroplasties resulted in a 16 per cent manipulation rate. Computer assistance with spacer blocks decreased the manipulation rate to 14 per cent, while using a novel tensioner device further decreased the manipulation rate to 7 per cent, a significant difference of p <0.01. Radiographic data illustrate all TKAs with the tensioner to be within 4° of the desired position.

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