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Background: Osteoarthritis (OA) is a degenerative disease that most often causes functional disabilities. The
complaints that most often cause functional disabilities in people with OA are pain and stiffness. The severity of OA
can be seen radiologically. The aim of this study was to assess the correlation of radiological severity of OA (Kellgren
and Lawrence) with functional disabilities (WOMAC score). Method: This type of research is an analytic observational
study with a cross sectional design. The population who became the respondents of this study were patients suffering
from knee osteoarthritis at the Medical Rehabilitation Installation of Dr. Mohammad Hoesin Hospital, Palembang in
November 2018 who met the inclusion criteria. Samples were taken by consecutive sampling technique. The
functional ability of the patient will be assessed using the WOMAC score and the severity of OA radiologically
interpreted based on the Kellgren and Lawrence criteria. Result: Statistical test used Somer's correlation test. From 32
respondents' data, it was found that there was no significant correlation between the radiological severity of OA and
functional disability (p = 0.097). Conclusion: There is no significant correlation between radiological severity of OA
(Kellgren and Lawrence) with functional disabilities (WOMAC score).
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