Imperial College London
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Mr. Gareth G. Jones

Faculty of Medicine, Department of Surgery & Cancer

Clinical Senior Lecturer in Orthopaedic Surgery
 
 
 
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Contact

 

+44 (0)20 7594 5465g.g.jones

 
 
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Location

 

203Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Oosthuizen:2019:10.1016/j.arth.2018.11.011,
author = {Oosthuizen, CR and Takahashi, T and Rogan, DM and Hans, Snyckers C and Peter, Vermaak D and Griffith, Jones G and Porteous, A and Maposa, I and Pandit, H},
doi = {10.1016/j.arth.2018.11.011},
journal = {The Journal of Arthroplasty},
pages = {450--455},
title = {The Knee Osteoarthritis Grading System (KOGS) for arthroplasty},
url = {http://dx.doi.org/10.1016/j.arth.2018.11.011},
volume = {34},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - BackgroundThe aim of this study is to validate the Knee Osteoarthritis Grading system (KOGS) of progressive osteoarthritic (OA) degeneration for the Tri-compartmental knee. This system defines the site and severity of OA to determine a specific knee replacement.MethodsThe radiographic sequence for KOGS includes standing coronal (antero-posterior), lateral, 30° skyline patella, 15° and 45° Rosenberg and stress views in 20° of flexion.Cohen’s Kappa and related agreement statistical methods were used to assess the level of concordance of the seven evaluators between A and B cohorts for each evaluator and also against the actual arthroplasty used. Sensitivity and specificity was also assessed for the KOGS in identifying true partial knee replacements (PKR) and total knee replacements (TKR) as decided from the cohort A evaluations.ResultsFrom a cohort of 330 patients who were included in the study, 71 (22.5%) underwent a TKR procedure, 258 (78.2%) a PKR and 1 (0.3%) was neither a TKR nor PKR. KOGS was able to identify true PKRs (sensitivity) in the range of 92.2% to 98.5% across all the different evaluators. The KOGS method was able to identify a PKR or a TKR with an accuracy ranging from 92% to 98.8% across all different evaluators.The surgical results after 20 months are at least comparable with the expected average in the academic literature.ConclusionThe KOGS classification provides a reliable and accurate tool to assess suitability of an individual patient for undergoing partial or total knee replacement.
AU  - Oosthuizen,CR
AU  - Takahashi,T
AU  - Rogan,DM
AU  - Hans,Snyckers C
AU  - Peter,Vermaak D
AU  - Griffith,Jones G
AU  - Porteous,A
AU  - Maposa,I
AU  - Pandit,H
DO  - 10.1016/j.arth.2018.11.011
EP  - 455
PY  - 2019///
SN  - 0883-5403
SP  - 450
TI  - The Knee Osteoarthritis Grading System (KOGS) for arthroplasty
T2  - The Journal of Arthroplasty
UR  - http://dx.doi.org/10.1016/j.arth.2018.11.011
UR  - http://hdl.handle.net/10044/1/64544
VL  - 34
ER  -
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