Outcomes of robotic-arm-assisted medial unicompartmental knee arthroplasty: minimum 3-year follow-up

2019 ◽  
Vol 29 (6) ◽  
pp. 1305-1311 ◽  
Author(s):  
Konstantinos Dretakis ◽  
Vasilios G. Igoumenou
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Robotic Arm ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty

Does component placement affect short-term clinical outcome in robotic-arm assisted unicompartmental knee arthroplasty?

2019 ◽  
Vol 101-B (4) ◽  
pp. 435-442 ◽  
Author(s):  
F. Zambianchi ◽  
G. Franceschi ◽  
E. Rivi ◽  
F. Banchelli ◽  
A. Marcovigi ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Clinical Outcome ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Robotic Arm ◽  
Short Term ◽  
Soft Tissue Balancing ◽  
Unicompartmental Knee ◽  
Post Implantation

Aims The purpose of this multicentre observational study was to investigate the association between intraoperative component positioning and soft-tissue balancing on short-term clinical outcomes in patients undergoing robotic-arm assisted unicompartmental knee arthroplasty (UKA). Patients and Methods Between 2013 and 2016, 363 patients (395 knees) underwent robotic-arm assisted UKAs at two centres. Pre- and postoperatively, patients were administered Knee Injury and Osteoarthritis Score (KOOS) and Forgotten Joint Score-12 (FJS-12). Results were stratified as “good” and “bad” if KOOS/FJS-12 were more than or equal to 80. Intraoperative, post-implantation robotic data relative to CT-based components placement were collected and classified. Postoperative complications were recorded. Results Following exclusions and losses to follow-up, 334 medial robotic-arm assisted UKAs were assessed at a mean follow-up of 30.0 months (8.0 to 54.9). None of the measured parameters were associated with overall KOOS outcome. Correlations were described between specific KOOS subscales and intraoperative, post-implantation robotic data, and between FJS-12 and femoral component sagittal alignment. Three UKAs were revised, resulting in 99.0% survival at two years (95% confidence interval (CI) 97.9 to 100.0). Conclusion Although little correlation was found between intraoperative robotic data and overall clinical outcome, surgeons should consider information regarding 3D component placement and soft-tissue balancing to improve patient satisfaction. Reproducible and precise placement of components has been confirmed as essential for satisfactory clinical outcome. Cite this article: Bone Joint J 2019;101-B:435–442.

scholarly journals Survivorship and patient satisfaction of robotic-assisted medial unicompartmental knee arthroplasty at a minimum two-year follow-up

The Knee ◽  
2017 ◽  
Vol 24 (2) ◽  
pp. 419-428 ◽  
Author(s):  
Andrew D. Pearle ◽  
Jelle P. van der List ◽  
Lily Lee ◽  
Thomas M. Coon ◽  
Todd A. Borus ◽  
...  
Keyword(s):  
Patient Satisfaction ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Robotic Assisted ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty

Lateral and patellofemoral compartment osteoarthritis progression after medial unicompartmental knee arthroplasty: A five- to 10-year follow-up study

The Knee ◽  
2020 ◽  
Vol 27 (4) ◽  
pp. 1135-1142
Author(s):  
Abdulhamit Misir ◽  
Erdal Uzun ◽  
Turan Bilge Kizkapan ◽  
Ali Eray Gunay ◽  
Mustafa Ozcamdalli ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Follow Up Study ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty ◽  
Osteoarthritis Progression

Medial Unicompartmental Knee Arthroplasty in Patients Less Than 55Years Old: Minimum of TwoYears of Follow-Up

2014 ◽  
Vol 29 (1) ◽  
pp. 101-105 ◽  
Author(s):  
Debdut Biswas ◽  
Geoffrey S. Van Thiel ◽  
Nathan G. Wetters ◽  
Bryan J. Pack ◽  
Richard A. Berger ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty

scholarly journals Lateral osteophytes do not represent a contraindication to medial unicompartmental knee arthroplasty: a 15-year follow-up

2016 ◽  
Vol 25 (3) ◽  
pp. 652-659 ◽  
Author(s):  
Thomas W. Hamilton ◽  
Rajan Choudhary ◽  
Cathy Jenkins ◽  
Stephen J. Mellon ◽  
Christopher A. F. Dodd ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Unicompartmental Knee ◽  
Medial Unicompartmental Knee Arthroplasty

scholarly journals All-Polyethylene Tibial Component Does Not Affect Survivorship of Medial Unicompartmental Knee Arthroplasty at Mid-Term Follow-Up

2020 ◽  
Author(s):  
Michele Gagliardi ◽  
Francesco Zambianchi ◽  
Alois Franz ◽  
Vitantonio Digennaro ◽  
Fabio Catani
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Tibial Component ◽  
Varus Deformity ◽  
Implant Positioning ◽  
Unicompartmental Knee ◽  
Kaplan Meier ◽  
Medial Unicompartmental Knee Arthroplasty

AbstractThe present study's primary aim was to determine the survivorship of a large cohort of patients implanted with a single design all-polyethylene tibial component medial unicompartmental knee arthroplasty (UKA). Its secondary purpose was to investigate the reasons underlying implant failure, with specific attention to component positioning and limb alignment. Between 2007 and 2013, 166 patients underwent medial UKA with a single design all-polyethylene tibial component at two centers. Preoperatively and postoperatively, patients were administered clinical outcome scores and radiographic information were collected. Postoperative complications and causes of revision were recorded. A total of 140 patients (80 in Center A and 60 in Center B) who underwent all-polyethylene tibial component medial UKA (82 cases in Center A and 60 in Center B) were taken into account. Kaplan–Meier cumulative survivorship of implants was 96.5% (confidence interval [CI]: 91.7–98.6%) at an average follow-up of 61.1 months. Tibial aseptic loosening was accounted for failure in one case, while no correlation was found between implant positioning and failure. Two revisions were performed in Center A and three in Center B. Slight correction of the preoperative varus deformity was performed at both centers. All-polyethylene tibial component UKA provided satisfactory clinical and functional outcome, with excellent survival rate in the early and mid-term follow-up. Continued patient follow-up is needed to determine long-term survivorship of the examined UKA model.

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