1. Frequency of knee pain

2. Twisting/pivoting pain

3. Straightening fully painful

4. Bending fully painful

5. Walking on flat surface

6. Going up/down stairs

7. Pain at night in bed

8. Sitting/lying pain

9. Standing upright pain

10. Swelling in knee

11. Grinding/clicking sensation

12. Knee catching/hanging up

13. Full straightening possible

14. Full bending possible

15. Morning stiffness

16. Stiffness after sitting

17. Descending stairs

18. Ascending stairs

19. Rising from sitting

20. Standing

21. Bending to floor

22. Walking on flat

23. Getting in/out car

24. Going shopping

25. Putting on socks

26. Rising from bed

27. Taking off socks

28. Lying in bed

29. Getting in/out bath

30. Sitting

31. Getting on/off toilet

32. Heavy duties

33. Light duties

34. Squatting

35. Running

36. Jumping

37. Twisting/pivoting

38. Kneeling

39. Awareness of knee problem

40. Modified lifestyle

41. Lack of confidence in knee

42. Overall difficulty