1. Highest activity level without pain

2. Frequency of knee pain in past 4 weeks

3. Knee stiffness/swelling in past 4 weeks

4. Knee locking/catching sensation

5. Difficulty going up/down stairs

6. Difficulty standing from sitting

7. Difficulty kneeling on front of knee

8. Difficulty squatting

9. Difficulty sitting with knee bent for long

10. Difficulty rising from chair

11. Difficulty running straight

12. Difficulty jumping/landing on affected leg

13. Difficulty stopping & starting quickly

14. Rate overall knee function (0-10)