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Table 1 Backward English translation of Arabic Version of the Oxford Knee Score (OKS-Ar)

From: Cross-cultural adaptation and psychometric analysis of the Arabic version of the oxford knee score in adult male with knee osteoarthritis

PROBLEMS IN YOUR KNEE (put a tick mark only one box of each question)
1. During the past four weeks …… How will you describe the pain your knee often have?
None
Very little
Little
Moderate
Severe
2. During the past four weeks ….. Do you have any problems in washing or drying your entire body because of your knee pain?
None at all
Very little difficulty
Moderate difficulty
Severe difficulty
Hard to do this
3. During the past four weeks …….. Do you have any problems in the entry and exit of your car or when using public transport because of your knee ?(Whichever is used)
None at all
Very little difficulty
Moderate difficulty
Severe difficulty
Hard to do this
4. During the past four weeks … How long you can be able to walk before it becomes severe knee pain? (With or without a stick)
No pain (For more than 30 min)
No pain (for 16–30 min)
No pain (for 5–15 min)
No pain (Just around house only)
There is no time at all without pain/severe pain when walking
5. During the past four weeks … After sitting on the table to eat, how much was the pain that you feel when getting up from the chair because of your knee?
There is no pain at all
Little Pain
Moderate Pain
Severe Pain
Worst pain
6. During the past four weeks … Do you feel stumbling when walking because of your knee?
Rarely/Never
Sometimes, or just at the beginning
Often, not only at the beginning
Most of the time
All times
7. During the past four weeks … Are you able to kneel down and after that getup from the kneel down position?
Yes, easily
Little difficulty
Moderate difficulty
Severe difficulty
No, it is impossible to do so
8. During the past four weeks … Do you suffer from pain in your knee in bed during the night?
No nights
A night or two nights only
Some nights
Most nights
Every night
9. During the past four weeks … How much was the amount of the impact of knee pain on your usual work (including housework)?
No impact
Little impact
Moderate impact
Considerable impact
Total impact
10. During the past four weeks … Have you ever felt that perhaps your knees are unstable or may make you fall?
Rarely/Never
Sometimes, or just at the beginning
Often, not only at the beginning
Most of the time
All times
11. During the past four weeks… Is it possible for you to do shopping for yourself?
Yes, easily
Little difficulty
Difficulty Medium
With great difficulty
No, it is impossible to do so
12. During the past four weeks … Is it possible for you to descend the one step of stairs?
Yes, easily
Little difficulty
Moderate Difficulty
Severe Difficulty
No, it is impossible to do so
Finally, please check that you have answered all the questions. Thank you so much