Revision total knee arthroplasty: a comparison of postoperative leg alignment after computer-assisted implantation versus the conventional technique

Use of computer-assisted Total Knee Arthroplasty systems enable more accurate implant placement, better tissue balancing and improved leg alignment. Image-free computer-assisted TKA systems rely on accurate identification of femoral and tibial landmarks to guide the implant planning process. Previously, researchers have studies the variability in collection of these landmark positions and the impact of this variability on the final implant position. Here, for the first time, we present a study assessing the variability of seven landmarks during anonymized clinical cases. Of all the landmarks, we found that there was maximum variability in collection of the femoral anterior notch point.

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Efficacy of Computer Assisted Surgery in Revision Total Knee Arthroplasty

The Journal of the Korean Orthopaedic Association ◽

10.4055/jkoa.2006.41.6.974 ◽

2006 ◽

Vol 41 (6) ◽

pp. 974 ◽

Cited By ~ 4

Author(s):

Dae Kyung Bae ◽

Kyoung Ho Yoon ◽

Seon Goo Kim ◽

Kyoung Jun Park

Keyword(s):

Total Knee Arthroplasty ◽

Knee Arthroplasty ◽

Computer Assisted Surgery ◽

Revision Total Knee Arthroplasty ◽

Computer Assisted ◽

Total Knee

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Outcomes of Computer-Assisted Total Knee Arthroplasty Compared to Conventional TKA: A Bicentric Controlled Retrospective Clinical Study

Journal of Clinical Medicine ◽

10.3390/jcm10153352 ◽

2021 ◽

Vol 10 (15) ◽

pp. 3352

Author(s):

Biagio Zampogna ◽

Stefano Campi ◽

Guglielmo Torre ◽

Eleonora Villari ◽

Francesco Moncada ◽

...

Keyword(s):

Total Knee Arthroplasty ◽

Knee Arthroplasty ◽

Time Lapse ◽

Conventional Technique ◽

Computer Assisted ◽

Clinical Databases ◽

Retrospective Clinical Study ◽

Significant Difference ◽

Total Knee

Despite the globally ascertained success of Total Knee Arthroplasty (TKA) procedure, 20% of patients are still unsatisfied with the surgery results. The purpose of the study is to identify the functional and radiological outcomes of the computer-assisted (CAS) TKA compared to the conventional technique. The clinical databases and medical records of both clinical sites were retrospectively analyzed, and then according to study time-lapse, inclusion, and exclusion criteria, eligible patients were retrieved and included. A total of 42 patients that underwent to CAS TKA (NAVI) and 61 patients that underwent to Conventional TKA (CONV) were included. The NAVI group reported a statistically significant higher surgical time. A lower intraoperative blood loss was found in the computer-assisted group, though this difference was not statistically significant. Implant survival analysis at two years did not show differences between groups during the follow-up period. At two years, follow-up postoperative intergroup analysis showed no statistically significant difference between groups. According to the radiologic analysis, the NAVI group showed comparable outcomes to the conventional group. The present study showed that there was no clinical and radiological difference between CAS arthroplasty and conventional technique.

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CAOS Augmented Mechanical Instrumentation Provides Versatility and Improved Accuracy During Total Knee Arthroplasty

10.29007/mq2k ◽

2020 ◽

Author(s):

Jefferson Craig Morrison ◽

Erika Frazier ◽

Mary Denton Stumb

Keyword(s):

Total Knee Arthroplasty ◽

Length Of Stay ◽

Knee Arthroplasty ◽

Weight Bearing ◽

Computer Assisted ◽

Surgical Time ◽

Surgical Workflow ◽

Leg Alignment ◽

Total Knee ◽

The Impact

This study assessed the impact of adding computer-assisted orthopedic surgery (CAOS) augmentation to conventional mechanical instrumentation with regard to the enablement of both mechanical and natural alignment surgical philosophies and accuracy of postoperative alignment for total knee arthroplasty (TKA). Fifty CAOS augmented TKA cases were compared to 101 conventional cases. Data on surgical time, length of stay, and postoperative weight-bearing long leg alignment were collected. The results reported no significant impact on surgical time with incorporation of CAOS augmentation into the conventional surgical workflow, as well as a shorter length of stay and substantial decrease in alignment outliers compared to the conventional TKA cases. The study revealed the advantages of CAOS augmentation in providing a non-disruptive tool to enhance surgical accuracy and offer versatility in accommodating different surgical philosophies during TKA.

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