This study aims to examine the association between bending knee sitting and severity of knee osteoarthritis in a rural Thai population aged 35 years and older. It will use a cross-sectional analytic design involving cluster sampling of residents from a village in Chachoengsao province. Data will be collected through questionnaires assessing factors like genetics, obesity, injury history, and lifestyle habits. Knee osteoarthritis severity will be evaluated using Kellgren-Lawrence grading of radiographs and the Thai Modified WOMAC scale. Descriptive and analytic statistics will analyze the relationship between sitting positions and osteoarthritis severity. Results could help identify risk factors and guide prevention efforts in rural communities.

1. 1

2. •
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•
2553
•
• 52.7
•
•
2

3. •
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– 2 20
–
•
•
–
knee joint injury,
3

4. Primary objective
1. association between bending knee
sitting and severity of knee osteoarthritis
in population age since 35 years
Secondary objectives
1. To know the prevalence of knee
osteoarthritis in population aged since 35
years of Moo 15 Nayao village , Tha-
Kradarn subdistrict, Sanamchaikhet
district, Chachoengsao province.
2. To know the risk factors of knee
4
osteoarthritis in poppulation in rural

5. 1. To decrease the risk factors which
associate with severity of knee
osteoarthritis and give patient
education about the risk factors
especially in rural community.
2. The study can be used to change,
protect, treat the disease and for
sustainable care.
3. To prevent the risk factors which
associate to the severity of knee
osteoarthritis and increase the 5

6. • Does bending knee sitting
associate with severity of knee
osteoarthritis in population age
since 35 years or not?
• Bending knee sitting associate
with severity of knee
osteoarthritis. 6

7. Natio Sp
nality ort Knee
Geneti Obese injury
Prevalence
c of
knee
osteoarthritisSe
Squat Ag
Kneeting e
Obes x Rx
ling e Knee
Lotus malformat
side-knee Knee
bending ion
injury
Severity of knee
osteoarthritis
Clinical : Quality of life:
Radiographic WOMAC score
grading 7

8. • Sitting position
As the
picture As the
shown. picture
The shown.
bottom Knee angle
does not more than
contact 120 degree.
the floor.
As the
As the picture
picture shown.
shown. The
Knee angle bottom
more than does not
130 degree. contact8

9. • Osteoarthritis
Is the degenerative of knee including
destruction of surface cartilage of recent area
and decrease of synovial fluid lubricant
function that gradually progress in a time.
• Osteoarthritis criteria
American College of Rheumatology
Classification Criteria for Osteoarthritis of
the knee (sensitivity 91% ,specificity 86%)
9

10. • Severity of knee osteoarthritis from
x-ray
• Kellgren-Lawrence grading criteria II
Grade I Grade
(1957)
Osteophytes
Grade III Grade IV
10

11. • Thai Modified version of the Western
Ontario and McMaster(WOMAC)
osteoarthritis index :
Professor Sek Aksaranukhreua
– Modify from The Western Ontario and
McMaster osteoarthritis index (WOMAC)
invented by Bellamy
– determine 24 topic 240 point included
Pain, Stiffness, Physical function
– Score 0 – 80 Mild
81 – 160 Moderate 11

12. Analytic Cross- sectional study
12

13. • Population
– Population aged since 35 years in rural
community
• Target population
– Population aged since 35 years from
Tha-Kradarn subdistrict, Sanamchaikhet
district, Chachoengsao province
• Study population
– Population aged since 35 years from
moo15 Nayao village Tha-Kradarn 13

14. • Inclusion criteria
Population aged since 35 years
from moo15 Nayao village Tha-
Kradarn subdistrict, Sanamchaikhet
district, Chachoengsao province.
14

15. • Exclusion criteria
1. Person who cannot answer the
questionnaire such as
– The deaf, the blind.
– Person who has psychic problem.
2. Person who has the contraindication of x-
ray.
3. Person who has disability of upper knee
both or one sides.
4. Person who has very severe knee
osteoarthritis and cannot determine knee
function from x-ray. 15

16. • Exclusion criteria
5. Person who has secondary osteoarthritis.
6. Person who used to get knee
transplantation both or one sides.
7. Person who reject the informed consent.
8. Person who reject the study.
16

17. • Sample method
– Cluster sampling
17

18. Sirikarnjanakowit C. et al. The association Between the Quality of Life and the Radiographic Severity
of the Osteoarthritis in Over 40 Years Old People of Thai Rural Community. Royal Thai Army Medical
Journal 2009; 62 (1): 49 18

19. 1
2
4
1
2
3
19

20. • AP, Lateral
SPSS
Version
15 20

21. •
– Thai Modified version of the Western
Ontario and McMaster(WOMAC)
osteoarthritis
•
•
21

22. • (Descriptive
analysis)
• (Analytic)
Pearson
Chi-square Fisher’s Exact Test 22

23. • We describe the process of the study
and tell that there is no any
disadvantage if you reject the study.
• We keep your data secretly and show
only the conclusion of the study
• You can withdraw from the study by
no need to tell any reason
• You will be examined by orthopedic
physician and got the way to prevent
and care of knee osteoarthritis.
23

24. • You may be feel unfavorable about
answering the questionnaire and may
got side effect from x-ray.
• No fee and no any rewards in this
study
• If you have any knee pain during the
examination. You can tell the
physician. He maybe examine in any
extra way.
• Informed consent is needed 24

25. Date
5 Feb
23 Feb
24 Feb
12 Feb
28 Feb
29 Feb
12 – 1
12– 27
–
Process
2 Mar
12
12
25
12
12
1. Data gathering process
- search the target area
- Topic study and
questionnaire
- conceptual framework
and review literature
- connect the streak
holder
- prepare the item for the
research topic
- research proposal
- prepare the
questionnaire
25
2. Information

26. Date
5 Feb 12 –
25 Feb 12–
29 Feb 12 –
Process
1 Mar 12
28 Feb 12
22 Feb 12
23 Feb 12
24 Feb 12
27 Feb 12
2 Mar 12
3. Research camp
preparation
4. Data gathering
- collecting data from
questionnaire and diagnosis
from x-ray
5. Health promotion
6. Analyzing
- collect all data
- analyze data and discuss
the conclusion
26

27. • Budget
This research is supported by military and
community medicine department of
Phramongkutklao college of medicine
• Description
–
– Stationary 3,000
B.-
– Questionnaire box 200
B.-
– Printing 10,000
B.-
– Item for health promotion
1,500 B.-
– Payment in research process 27

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