Unicompartmental knee arthroplasty in patients with full versus partial thickness cartilage loss (PTCL): equal in clinical outcome but with higher reoperation rate for patients with PTCL

2015 ◽  
Vol 135 (8) ◽  
pp. 1169-1175 ◽  
Author(s):  
Michael W. Maier ◽  
Felix Kuhs ◽  
Marcus R. Streit ◽  
Peter Schuhmacher ◽  
Tilman Walker ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Reoperation Rate ◽  
Cartilage Loss ◽  
Unicompartmental Knee ◽  
Partial Thickness

scholarly journals Unsatisfactory outcomes following unicompartmental knee arthroplasty in patients with partial thickness cartilage loss

2017 ◽  
Vol 99-B (4) ◽  
pp. 475-482 ◽  
Author(s):  
T. W. Hamilton ◽  
H. G. Pandit ◽  
A. Inabathula ◽  
S. J. Ostlere ◽  
C. Jenkins ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Cartilage Loss ◽  
Unicompartmental Knee ◽  
Partial Thickness

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 The efficacy of anterior superior iliac spine (ASIS) as reference for anatomical axis of femur in Unicompartmental knee arthroplasty

2020 ◽  
Author(s):  
Yan Yan ◽  
Lu Feifan ◽  
Cheng Chongjie ◽  
Zhang Qidong ◽  
Wang Weiguo ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Compartment ◽  
Cartilage Loss ◽  
Coronal Plane ◽  
Mean Deviation ◽  
Plane Angle ◽  
Deviation Angle ◽  
Unicompartmental Knee ◽  
Anatomical Axis

Abstract Purpose：We aim to figure out the deviation of using ASIS as the reference for femoral anatomical axis (AA) in unicompartmental knee arthroplasty (UKA) and the degree of angle between AA and actual mechanical axis (MA) in the coronal plane for patients with medial compartment knee osteoarthritis (KOA). Patients and Methods： Between December 2017 to December 2019, a total of 120 consecutive knees (104 patients) with severe medial compartment KOA were included in this study. The weight-bearing full-length radiographs of included knees were analyzed using Picture Archiving Communication System (PACS). The lines of AA, operation AA (oAA) and MA were identified. Angles between AA and oAA (Angle 1), AA and MA (Angle 2) were measured on the radiographs. Symbol “+” and ”-” were attached with angles between AA and oAA to describe the situation when oAA lies in the lateral or medial side of AA. The statistical analysis was done using SPSS Version 23.0. A p values＜0.05 were considered to be significant. Results: The deviation angle between AA and oAA in the coronal plane (Angle 1) was (0.91±1.08)° (-2.61°-3.04°). The angle between AA and MA in the coronal plane (Angle 2) was (6.26±1.01）° (3.95°-8.93°). No significant differences of Angle 1 and Angle 2 were found between sexes. For knees with partial thickness cartilage loss (PTCL) (n=39) and full thickness cartilage loss (FTCL) (n=81), Angle 1 was statistically significantly different in the 120 knees (0.61°vs.1.05°;p=0.035). While the Angle 2 for knees with PTCL and FTCL was (6.13±0.80)° (4.83°-7.99°, p=0.326) and (6.32±1.09)° (3.95°-8.93°, p=0.326), respectively. Conclusion：A mean deviation angle of 0.91° was identified between AA and oAA, the value of which could be larger in knees with FTCL. ASIS may not be a reliable reference for AA of femur in UKA patients. And an adjustment of at most 1.0°of varus angle may help achieve better coronal alignment.

scholarly journals Similar clinical outcome after unicompartmental knee arthroplasty using a conventional or accelerated care program

2009 ◽  
Vol 80 (3) ◽  
pp. 334-337 ◽  
Author(s):  
Lotte Borgwardt ◽  
Bo Zerahn ◽  
Henning Bliddal ◽  
Christian Christiansen ◽  
Jesper Sylvest ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Care Program ◽  
Similar Clinical Outcome ◽  
Unicompartmental Knee

Association of body mass index and clinical outcome 2 years after unicompartmental knee arthroplasty

2008 ◽  
Vol 129 (4) ◽  
pp. 463-468 ◽  
Author(s):  
Florian D. Naal ◽  
Carl Neuerburg ◽  
Gian M. Salzmann ◽  
Monika Kriner ◽  
Fabian von Knoch ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Clinical Outcome ◽  
Body Mass ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Unicompartmental Knee
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